Bits'n'pieces of info regarding various Linn product histories

Most of this was originally collected from the linn @ topica mailing list which was then collated by Daniel on his site. Most comments are from "real people", not Linn employees. I then ripped this data with Daniel's permission. Since then it has been updated by me.

Regarding this data please consider it as a "it's nice to know", especially when deciding between two versions of the same product, i.e. "is the newer one really worth that much more money?", but don't necessarily turn down a good offer on a piece of Linn gear just because there happens to be a later version of that product available. Early examples of Linn products are far from useless; in many cases the differences can even be considered academic.

Note: I'm not responsible for this information, I'm just collating it. It was done because I think the information provided is really useful when considering used Linn gear. 

Note2: I have no information apart from what is entered here. I promise.

Note3: See note 2.


Quicklinks

Sources: [ CD12 || Ikemi || Karik || Numerik || Mimik || Mimik/Karik spares || Discread Mimik/Karik Mod || Kremlin || Pekin || Klimax DS & DSM || Akurate DS & DSM || Majik DS & DSM || Classik || Classik Movie || Unidisk [1.1/2.1/SC] || LP12 ]
Control: [ Klimax Kontrol || AV5103 || Kairn/Kairn-Pro || Kolektor || Wakonda || Exotik || Majik || Intek || Kisto || Kinos]
Power amplifiers: [ Klimax || Akurate || Majik ||Klout || AV2250 || AV5125 || AV5105 || LK85/LK140 || LK100 || LK240 || LK280 || LK2 ]
Speakers: [ AV5120/5140/5150 (Ekwal/Espek/Melodik) || Ninka || Katan || Trikan || Komri || Klimax / Artikulat 350/320/340/345 Komponent || || Majik 109/112/126/140 || Akurate 242/212/225/221 || Keilidh || Akubarik || Akudorik || Series 5 || Kaber || Index || Helix || Nexus || Isobarik || Kan || Sara || Diskreet || Sekrit || Centrik || Sizmik || Unik || Afekt || Tukan || Keltik ]
Other: [ Aktiv || Cables || Misc ]

CD12

Price: 20000 USD, 12000 GBP (2004)
Introduced Jan 1999. Discontinued Aug 2004
There is an upgrade/modification which includes a hardware and software update to correct some early bugs, and a new cd engine. This allowed quicker track access, and improves the CD12 sonically. The latest CD12 have a new DAC, this eliminates the jitter setting on the user options. Someone commented on the above: "I do not think the engine changes are worth worrying about, the software change is straight forwards, but imagine the chip change is a new circuit board, and probably not warranties as an upgrade."
[CD12 picture]
change when serial
CD Engine upgraded. Jul 1999 331
PIC (U3 on main board) software upgraded to eliminate a very intermittent fault that caused the sound to occasionally 'drop out'. Sep 1999 379
Interconnect leads upgraded from standard (black) to silver interconnect leads. Jan 2000 445
Change of processor from 20 to 24-bit due to Linn not being able to get the original part anymore. ? 496

Ikemi

Price: 2200 GBP (2004)
Introduced: Jan 1999.
There have been two revisions:
change when serial
Mekk transport software changed. Oct 1999 1892
EFM adjustment pot was added to allow fine tuning of the laser. Jan 2001 617218

Karik

Introduced: Jan 1992, discontinued May 1999 [Karik mechanics picture]
Short Karik story:
  • Karik 1 No D/A on board. Numerik Mandatory
  • Karik II D/A on board. Brilliant was introduced in -94. The latest (grey) front finish introduced in ~94/95
  • Karik III Entire PC Board changed to Surface Mount. D/A included in main board, not a separate as Karik II
  • Karik IV Brilliant changed to Slimline
  • Karik V Changes to the transport assembly
Note that "IV" and "V" are terms used by, AFAIK, only one dealer - Stereokompaniet. Stereokompaniet introduced these two notions in order to help people separate the different versions of Kariks, since the last two changes did improve the sound quite a bit.
As far as Linn is concerned, a Karik III is the latest possible.
"Personally I think the biggest improvment to Karik was the one acheived between II--> III"
change when serial
Introduction of Kyle board (internal D-A converter). Previous to this serial number, the Karik could only be listened to via an external D-A converter. May 1992 3,000
Fitting of conical spring to laser guide rod as the laser would occasionally fail to engage on the drive cog. Oct 1992 3,238
Static protection of Kyle board Mar 1993 4,200
Change to earthing R121 shorted out as it was discovered that the Karik function could be affected by RF interference. Upgrade available see Karik RF Interference Modification Procedure Aug 1993 4,388
Guide rod spring removed & slipping clutch cog fitted to Mekk improved the reliability of the Mekk. Sep 1993 approx 5,000 approx
Karik-O introduced whereby the Mekk was replaced by the Optomekk. The main difference was that the mechanical switches were replaced by electronic optical switches (Optical switches are more reliable.) Jun 1993 6,000
Software upgrade. Improved the reliability of the drawer action, reduced the chance of the drawer jamming. Upgrade also allows the Karik to be used in a Knekt system. Upgrade available. Mar 1994 6,778
Karik/SPS introduced Brilliant Switch-mode Power Supply (SPS) fitted to the Karik as standard Jun 1994 8,000
Brilliant enhancement kit fitted as standard (including the small Gizmo board) this improved the sound quality of the Karik/SPS Nov 1994 8,745
Karik III introduced main board changed from Thru-hole to Surface mount . Also around this serial number, new control board fitted with new type remote receiver, which requires no sensitivity adjustment Dec 1994 9,000
Modifications to the Line Remote Out drive current. To remedy the problem (found on Karik III only) whereby in multi-room applications, very occasionally the line remote out could not supply sufficient current to drive the other products it is connected to. Upgrade available. Dec 1994 9,619
Brilliant SPS upgraded to Slimline Brilliant SPS. Upgrade available. Oct 1995 11,000
Software upgrade fixed the programming bug whereby if a sequence of tracks was programmed, which included a track ending in 0 (e.g. 10, 20 etc), the Karik would not always follow the programmed sequence). Upgrade also allows Karik to respond to the Repeat function from the remote control handset. Upgrade available. Aug 1996 12,226
Optomekk upgraded to Mekk 4. The main difference is a more reliable laser tray considerable changes were made to the Optomekk to incorporate this. Nov 1996 13,000
Disc readability mod introduced whereby the ability of the Karik to read poor or damaged CD s was improved by upgrading the cable between the laser and the main board. Upgrade available -- see Discread Modification Procedure. Oct 1997 14,200 approx
Optomekk upgraded to replace bungees with a mechanical assembly this removed the bungees (which were prone to compression over time) and decreased noise levels when the jack lifted and lowered. Apr 1998 15,400 approx
Driver IC s (U22 and U23) changed from thru -hole to surface mount type. Sep 1998 15,700 approx

Numerik

Introduced 1991, discontinued Sep 1999
change when serial
NUKI (Numerik Upgrade Kit) fitted as standard -- DAC ICs upgraded -- sound improvement mod May 1993 1,300 approx
Brilliant Switch Mode Power Supply fitted as standard. Part no changed to Numerik/SPS May 1994 3,000
Brilliant SMPS enhancement fitted as standard (sound improvement) Oct 1994 3,307
Slimline Brilliant SMPS fitted as standard. Power supply upgrade. Oct 1995 4,000
"According to my knowledge from serial#1354 the Nuki chip upgrade replaced earlier DAC's."
"The Numerik D/A converter was upgraded with higher spec. DAC chips from serial number 1398 and with the slimline power supply from serial number 4000."

Mimik

Introduced 1993 Mimik II started from S/N 4000 and was introduced in 1998. The main difference is the usage of surface mount (SMD) electronics in the Mimik II, and the usage of through hole components in the Mimik I.

Mimik/Karik spare availability

Karik & Mimik * Some spares now unavailable

Our stock of certain replacement parts * some laser trays & lasers * has now been exhausted (details below). The Linn purchasing team have devoted a considerable amount of time, since the discontinuation of these laser models by the manufacturer, in an attempt to source the parts but have found that they are unavailable for purchase worldwide.

I am sure you will appreciate that this situation is entirely beyond our control and is a result of changes affecting the consumer electronics industry in general. At Linn, we take great pride in the longevity of our products and in our service backup. Service support for products 10 - 20 (and more) years old is highly unusual in this business but is not uncommon for Linn and therefore this situation is one that, while beyond our control, is also disappointing to us.

Linn will continue to support these products in every other way and the issue affects only failures requiring laser or laser-tray replacement. Also, in order to demonstrate our commitment to existing customers, anyone affected by this issue will be offered a guaranteed trade-in price for their Karik or Mimik against the purchase of an Ikemi or Genki. If you have a product that you think may be affected, please contact the staff at Linn Service for advice, who can also advise on the trade-in pricing.

Information * laser trays & lasers
The laser tray is the small platform that supports and guides the laser & drives the disc. It contains the disc motor (which spins the disc), the sled motor (which drives the laser), the guide rods (which hold & guide the laser) and associated wiring and mechanical parts. The lasers can be replaced on the laser tray; hence the two parts are mentioned as separate entities in this instance. The motors on the tray have been known to fail on occasion.

Karik / Mimik models & parts affected:

  • Kariks < s/n: 12999 Lasers & laser trays unavailable Linn part no: MCP 584
  • Kariks > s/n: 13000 Laser trays unavailable. Lasers available Linn part no: MCP 812
  • Mimiks (all ser/nos) Laser trays unavailable. Lasers available Linn part no: MCP 812

Discread Mimik/Karik Modification

There's an update kit for the Mimik and Karik called "Discread" that involves changing a wiring harness and a surface mount component. This kit may be obtained from the local importer/ditributor or possibly your local retailer, who should be tried first. This kit improves tracking capability and optimises the performance of the transport to a higher degree than previously attained. The kit improves reading of poor or damaged CD's.

Kremlin

Price: 2800 GBP (2001)
Introduced 1991, discontinued 2001.
[Kremlin picture]
change when serial
Brilliant PSU fitted Jul 1994 1,000
Brilliant Enhanced PSU fitted Oct 1994 1,055
Slimline PSU fitted Feb 1996 2,000

Pekin

Price: 650 GBP (2004)
[Pekin picture]

Klimax DS & DSM

Price:
DS: 18500 USD (2009), 13300 GBP (2015), 15800 GBP (2017)
DSM: 15850 GBP (2015), 18900 GBP (2017)
Exakt DSM: 8500 GBP (2015), 9200 GBP (2017)
Klimax DS Upgrade (Katalyst upgrade for Klimax DS pre-Sept 2016) 3850 GBP (2017)
Klimax DSM Upgrade (Katalyst upgrade for Klimax DSM pre-Sept 2016) 4200 GBP (2017)
Klimax DS to DSM conversion 8800 GBP (2017)
[Klimas DSM] [Klimax DSM]

change when serial
Dynamik PSU ? Serial numbers prior to 1189823 need to be returned to Linn for re-machining the casework.
New Audio Board (KDS/1) ? Serial numbers prior to 1189823 need to be returned to Linn for re-machining the casework.
Power switch moved to the front. Not a audio upgrade but to comply with newer regulations 2013 ?
KDS/2 (aka KDS/E as it includes Exakt outputs) Improved clocking and improved audio circuitry layouts have led to a reduction of components, shorter signal paths and reduced jitter. 2015 ?

Akurate DS & DSM

Price:
DS: 6850 USD (2009), 4750 GBP (2015), 5150 GBP (2017)
DSM: 5850 GBP (2015), 6350 GBP (2017)
Exakt DSM: 2500 GBP (2015), 2700 GBP (2017)
Akurate DS Upgrade (Katalyst upgrade for Akurate DS pre-Mar 2015) 2000 GBP (2017)
Akurate DSM Upgrade (Katalyst upgrade for Akurate DSM pre-Mar 2015) 2400 GBP (2017)
Akurate DS to DSM conversion 3400 GBP (2017)
[Klimas DSM] [Klimax DSM]

Majik DS & DSM

Price:
DS: 3500 USD (2009), 1990 GBP (2015,2017)
DSM: 2965 GBP (2015,2017)
Majik DS upgrade (Upgrade with Exakt Link for Majik DS pre-Mar 2015) 800 GBP (2017)
Majik DSM upgrade (Upgrade with Exakt Link for Majik DSM/1 Apr 2012-Mar 2015) 1000 GBP (2017)
Majik DS-I upgrade (Upgrade for Majik DS-I or Majik DSM pre-Apr 2012) 1650 GBP (2017)
There are 5 versions to date (March 2017):
1. MDSi (no HDMI)
2. MDSM (same as 1, just re-badged)
3. MDSM +HDMI
4. MDSM +Exakt links and improved clocking/circuit layout
5. MDSM +HDMI 2.0
[Klimas DSM] [Klimax DSM]

Classik

Price: 995 GBP (2004)
Introduced March 1998 It seems the Classik-T had a CD Transport upgrade and at least one OS upgrade to prevent static when changing sources.
[Classik picture]

Classik Movie and Movie DI

Price: 2500 GBP (2004), 3470 USD (2009)
A quite large software update is apparently available for all CMS DI's with serial <975037.
According to Linn however we only have:
Classik Movie should be running software version S02220111 (only works for variants made from 2005 from serial number 1103087 onwards).
[Classik Movie picture] [Classik Movie DI picture]

Unidisk [1.1, 2.1, SC]

Price:
1.1: 6500 GBP (2004), 11950 USD (2009)
2.1: 4500 GBP (2004)
SC: 2995 GBP (2004), 5510 USD (2009)
Introduced 2003. Dropped from Linn support in Sep 2017.
[Unidisk 1.1/2.1 picture] [Unidisk SC picture]
software update when change
V1 - SP029V1 6th June 2003 1) Corrections to RS232 command protocol as follows (see RS232 comms spec for more detail):
  • $LAYER ?$ command now implemented correctly
  • Corrected spelling errors in stream types DTS->DSD, LCPM->LPCM
  • Upstream message timeouts improved
  • Help text added for RS232 commands
    2) Direct transitions from fast scan modes to a fast search resulted in the wrong fast search speed being used - now fixed.
    3) Occasionally the skip and search symbols could be left on the display while playing - this has now been improved.
    4) S/PDIF outputs are now been properly muted while playing SACDs and DVD-Audio MLP tracks.
  • Improvements
  • 1) RS232 command protocol now supports backspace and delete to allow easier manual use with a terminal program.
  • V2 - SP029V2, changes between P1520136 and P1520142 22nd July 2003
  • Support added for HDCP video output.
  • Resolved audio drop-out errors on DVD-Video.
  • Fixed LPCM DVD-Audio white noise when doing play/pause/play or play/ff/play sequences.
  • Selection of CD layer on SACD could occasionally skip the first 22 seconds - Fixed.
  • Fixed incorrect disc remaining and total times with a program active on an SACD.
  • SACD scan mode could turn into track skip on occasions - Fixed
  • SACD now supports 255 tracks & 255 mins
  • SACD layer switch has been changed to improve speed of layer change.
  • After loading SACD the hand icon was shown - Fixed
  • After stopping a DVD via a menu, play/stop/play now updates the front panel display.
  • Display mode (time remaining/elapsed) is now displayed correctly for data discs and also reports the text as 'file' rather than 'chapter'.
  • Display fixed for exclusive program mode
    1) S/PDIF outputs (TOSLINK and COAX):
    When skipping tracks, searching, selecting Title and Main Menus on DVD Video discs, during loading of audio CDs, and during power-up; some AV receivers connected to the S/PDIF outputs could produce pops or other noises. The S/PDIF output has been improved so that it idles or mutes correctly during these operations.
    2) Video adjust (PAL / NTSC / Native selection):
  • The video adjust button didnít always work when the tray was ejected. This has been corrected.
  • The video adjust button was incorrectly processed while in SETUP mode, this has now been suppressed.
  • The video adjust button cannot work while a data disc (MP3, JPG etc) is loaded. A message is now displayed to inform the user.
    3) SACD related:
  • Track numbers and totals for SACDs having more than 99 tracks are now displayed correctly (SACDs may have up to 255 tracks)
    4) DVD Audio related:
  • DVD Audio displays now refer to "Groups" and "Tracks" rather than "Titles" and "Chapters".
    4) DVD Video related:
  • Problems caused by entering a Title or Main Menu while a DVD was paused have been fixed.
  • When in a menu, the PLAY button performed a PLAY operation instead of a select. It now performs the select operation.
    5) Data disc related:
  • Total time display was not updated correctly when loading a data disc (it used the time of the last disc loaded). This has now been corrected.
    6) General front-panel-display related:
  • If the STOP button was pressed whilst already stopped, and then the PLAY button pressed, the Unidisk would start playing; but the STOP icon would still be shown.
  • Pressing the OPEN button on the front panel didnít always display the eject symbol. It now displays the symbol.
  • The disc information was not always updated correctly after going into SETUP mode or using the video adjust button. This has been corrected. ,br> 7) Programming:
  • The OPEN button was not always processed after entering a program.
  • If PLAY was pressed to start a program when no tracks had been selected, the disc would not play. The unit now assumes it should play a one-track program.
  • There was a problem when trying to select a track after clearing a program. This has now been corrected.
    8) RS232 Control:
  • Product ID and start-up message changed from UNIDISC to UNIDISK.
  • $PLAY$ command is now accepted while the tray is open so that DVD Audio discs can be auto-played.
  • $PLAY$ command was ignored on DVDs after a STOP operation. Playback now resumes on issuing the command.
  • $LAYER$ command (performs layer changes on SACDs) is now implemented. The $LAYER ?$ command is now supported while a disc is playing.
  • $INIT$ command now implemented - initialises user options to defaults.
  • Error responses to incorrect or unsupported commands improved.
    Improvements:
    1) Sleep-mode implemented. A new user option has been added, giving the option of a sleep display after an adjustable time period.
    2) Direct track selection is now possible when the tray is open (direct track selection only effective on SACDs and CDs).
    3) The Unidisk now differentiates between "NO DISC" and "UNKNOWN DISC" on its front-panel-display.
    4) Data discs now show "FILE ELAPSED" on the front-panel-display rather than "TRACK ELAPSED".
    5) Front panel shows "INITIALISING" during power-up instead of a blank status.
  • V3 - SP029V3 22nd August 2003 This software pack contains the following changes for the Unidisk 2.1. There are no changes for the Unidisk 1.1: the software pack is functionally identical to SP029V2 for the Unidisk 1.1.
  • 1) A workaround has been introduced for the phase problems experienced when playing DSD streams (from SACD) on a Unidisk 2.1.
  • V4 - SP029V4 17th September 2003
  • Eject command from handset brought in line with eject button on front panel. This means the eject happens more often than not from the remote.
  • SACD eject command produces a flashing eject symbol if a layer change is in progress.
  • Fixed problem when cancelling a program meant the user cannot change the layer on an SACD.
  • Fixed problem where ejecting a disc during layer selection could lead to the layer selection failing the next time the disc was loaded.
  • Added a couple of FLASH upload status messages for messages from the ESS DVD engine.
  • Fixed problem where tray is open and the user pushes it to close it, which it does, but then it opens again. This happened just after play.
  • Changed user options definitions and settings in an effort to make them clearer.
  • Code now requires ESS version S1520140 or greater for changes to SACD layer selection.
  • V5 - SP029V5, changes between P1520143 and P1520145 13th October 2003 Fix for problem where Unidisk would drop out of menu on change of video type (NTSC, PAL)
    Issues fixed:
  • Scanning forward on CD, when play selected the time jumps forwards 30 seconds before playing.
  • Scanning back on CD and the time still goes forward.
  • Scanning back on CD over track boundary skips to start or end if disk.
  • Scanning back on SACD over track boundary skips to start or end if disk or play will freeze.
  • Time display when playing CD sometimes skips a second.
  • When searching on CD's there is no audio.
  • Display of 'KOREAN' language option on DVD subtitle selection.
  • Too few lines displayed in progressive video mode.
  • V6 - SP029V6, Software version S1150151 19th March 2004 Fixes for RS232 control. Updates were not always made to the display when sending an RS232 search command followed by a pause or play.
  • Skip, skip, play on handset no longer leaves skip symbol on display.
  • Fix to direct chapter selection code. (Affects Knekt, front panel IR and RS232 on DVDs)
  • Fixes for bugs in RS232 TIME and PROGRAM commands.
  • RS232: TV type MULTI changed to NATIVE.
  • RS232: DISC_CD is now "DISC_CDDA" and "CD" is now "CDDA". $PAUSE$ event is now $PAUSED$.
  • RS232: Changes to video format (PAL/NTSC and INTERLACED/PROGRESSIVE) are now disallowed when a disc is playing or a data disc is loaded. This is now as the remote handset worked.
  • V7? - SP029V7?, Software version S1150223 ?? Not sure what the fixes are but this is the version running on my Unidisk 1.1 (E3S Software version S1520231, H8S Software version S1150223).
    I should also mention that my Unidisk 1.1 used to get quite warm and after it went back to the factory it came back with a vented case. I'm trying to remember when that was.

    LP12

    Price: Deck only 1400 GBP (2004) 1770 GBP (2017)
    See the FAQ for more info, options and prices
    Introduced 1973

    LP12 FAQ (based on the original Analogue Addicts info.)

    [LP12 picture]
    change when serial
    Main bearing liner changed, sub-chassis strengthened, motor control and mains switch changed. 1974 2,000
    Top plate modified (Linn claim Nirvana kit available this year) 1978 23,000
    Lid and hinges changed. 1979 27,000
    Nirvana mechanical components. This consisted of 1 new spring kit (3 springs and 6 grommets), 3 large locknuts, 6 small locknuts, 5 black chassis bolts, 2 motor mounting screws, domes, and nuts allowing it to be positioned with better accuracy. 1 motor thrust bearing kit (endcap, spring, ball bearing). 1 new drive belt. The springs changed from zinc coloured to black. Feb 1981 31,826
    Valhalla crystal driven electronic power supply made standard. 1982 May 38,794
    Enlarged plinth corner bracing. 1984 53,000
    Sub-chassis strengthening bar epoxy glued instead of spot welded. Jun 1984 54,101
    Cap head screws on bearing housing. Aug 1985 60,383
    Diode modification to Valhalla. Sep 1985 61,090
    Strengthening blocks on corners of plinth. Dec 1985 n/a
    Suspension springs improved. 1986 n/a
    New clear lid. May 1986 n/a
    New Formica and MDF armboard. Mar 1987 69,161
    New bearing housing. Mar 1987 n/a
    New springs. Apr 1987 69,591
    Bearing improved with better lining material and tighter tolerances. Change to black oil. Suspension springs improved. Arm board composition improved. 1987 70,000
    New MDF armboard. n/a 79,160
    Motor thrust pad changed. Valhalla surge guard modification. PCB mains lead (UK). 1989 79,700
    Harder suspension grommets fitted. 1989 81,000
    Lingo power supply available as add-on. 1990 n/a
    Valhalla with 45. 1991 87,047
    motor thrust pad cap added to Lingo models. n/a 87,047
    motor thrust pad cap added to Valhalla models. n/a 87,206
    Introduction of LP12 Basik, Trampolin available. n/a 87,672
    Solid base board replaces hardboard. n/a 87,672
    Improved top plate fixing. 1992 88,950
    Linn LP12 Basik introduced. n/a n/a
    Cirkus upgrade fitted as standard. 1993 90,582
    a limited edition commemorative LP12 was created to mark the 25th anniversary of the LP12. Amongst other features, it bears a plaque etched with the signature of Linn's founder Ivor Tiefenbrun. 1997 n/a
    4th bolt added near motor on top plate, fitted as standard. Required extra cross beam on plinth. 2000 n/a
    New motor used (first new motor since original 1972). 2001 n/a
    Maple plinth introduced adding to existing black, walnut, rosewood and afromosia options. 2002 n/a

    Klimax Kontrol

    Price: 6000 GBP (2004), 13500 USD (2009)
    [Kontrol picture]

    change when serial
    New Dual-Mono Audio Board: Upgraded units are often referred to as Klimax Kontrol/1 or KK/1. It should have sticker underneath stating 'KONTROL/UPG' plus the serial number beneath. Alternatively, inside the unit there will be two volume control chips instead of just one. Standard from Sep 2008 approx. 1168755 onwards
    Power switch moved to the front, Units labelled Klimax Kontrol/2. Not a audio upgrade but to comply with newer regulations ? ?

    AV5103

    Introduced June 1996
    [AV5103 picture]
    change when serial
    AV5103 upgraded : Main Processor IC (Zoran IC) Upgraded from A2 to A3 spec -- allows the Limbik software upgrade to function correctly. DSP (digital signal processing) section of the circuitry incorporated onto a 'piggy-back' board instead of the main board -- allowing easier future upgrade. Apr 1997 1,450 approx
    Limbik Software Installed as standard. Upgrade Available. Sep 1998 1,672
    Silver AV5103 introduced in addition to the standard Black finish Dec 1999 N/A
    DTS decoding capability included as standard. Upgrade available for units > s/n 1450 Jan 2000 3,000
    Software Upgraded and Display Upgraded. Software Upgrade allows AV5103 to support the INLINE video switcher, which adds up to 6 additional video sources and allows new VFD display to function. See www.inlineinc.com for details of Inline switcher. Display upgraded from LCD (Liquid Crystal Display) to VFD type (Vacuum Fluorescent Display) which is much brighter, is coloured blue and is more aesthetically pleasing. Jun 2000 3,276
    Software Upgraded Main changes:
    • Inline Video Switcher can now be controlled via RS232
    • Improved controllability of Inline Video Switcher
    Mar 2001 622,550
    Software upgrade to R5B18. Main change: Enhancement of subwoofer performance in DTS mode. June 2001 633,950

    Kairn/Kairn-Pro

    Introduced Mar 1991, -Pro discontinued 2002
    [Kairn Pro picture]
    change when serial(Kairn) serial(Kairn-Pro)
    Back panel changed - clearance around PH1 & PH2 inputs increased to prevent earth loop May 1991 1100
    Software changed additional user functions 7- 9 added. Mar 1992 2,384
    Control board upgraded. Allows Kairn to be used in Knekt system without any hardware modifications. Apr 1992 2,490 approx
    Kairn-Pro introduced Aug 1992 N/A N/A
    Brilliant Switch Mode Power Supply fitted as standard. Part nos changed to Kairn/SPS and Kairn-Pro/SPS. Dec 1993 5,000 5,000
    Brilliant SMPS enhancement fitted as standard (sound improvement) Oct 1994 5,545 5,309
    Software changed additional user functions 10-12 added. Also, this version of software allowed Kairn/Kairn-pro to be used in a Knekt system Nov 1994 5,653 5,309
    Slimline Brilliant SMPS fitted as standard. Power supply upgrade. Oct 1995 7,000 6,000

    Kolektor

    Price: 575 GBP (2004)
    Introduced: Sep 1998
    [Kolektor picture]
    change when serial
    Power supply upgrade. Changed from transformer to on-board switch-mode power supply (not "Brilliant" though, this is a simpler SMPS). ? ?
    Software Upgrade V1:
    • Volume levels are retained from one input to another when using Source select button
    • Volume range changed from 0-60 to 0-100 (overall volume range remains unchanged i.e. lowest and highest volumes are same as before)
    • Mute delay at power up to minimise audible noise during power-up sequence
      "Early Kolektors used a conventional moulded transformer placed on the preamps small main pcb (not a toroid). They also had 60 steps on their volume, but this can be software upgraded to 100 steps. Later Kolektors have 100 steps on the volume and a switched power supply, again mounted on the main pcb. This is not a Brilliant, but a simplified version with less components. Linn calls this new p.s. "universal", because it accepts input voltages between 90 and 244 (or something) VAC."
    • Also Power supply upgraded. Changed from transformer to on-board switch-mode power supply (not "Brilliant" though, this is a simpler SMPS).
    11 Nov 1999 2178
    Software Upgrade V2:
    • Fixed unmuting bug on power up, will now honour the mute state on power down.
    • CD commands OPEN and STOP will no longer automatically switch sources.
    • New software version format added (see below).
    • New RS232 commands :-
      • $VERSION HARDWARE ?$ - reports the version of main board fitted,
      • response for old hardware $VERSION HARDWARE PCAS124L3$,
      • response for new hardware $VERSION HARDWARE PCAS124L4$.
      • $VERSION SOFTWARE ?$ - reports the version of software loaded,
      • response for prototype version $VERSION SOFTWARE P0550103$
      • and response for release version $VERSION SOFTWARE S0550103$.
      • $CHECKSUM ?$ - reports software checksum.
      • $COUNTER POWER ?$ - reports total number of days, hours, minutes and seconds the unit has been powered up, typical response $COUNTER
      • POWER 3:17:35:42$.
    22 April 2000 2,154
    Software Upgrade V3:
  • Main changes . modified volume control to ensure that bass & treble settings are correctly set on power-up.
  • Feb 2002 683,683

    Wakonda

    Price: 995 GBP (2004)

    Two models; an older one with 'circular' brilliant, and a newer one with slimline brilliant. For a period of time, many reported that the Kolektor had a better linestage than the Wakonda, but recent comparison seem to result in the opposite conclusions, so perhaps a recent upgrade of the Wakonda, sonically important, has taken place.

    "According to Linn Inc. in Jacksonville, the Wakonda received the Brilliant slimline PSU as standard at serial number 2500."

    [Wakonda picture]

    Exotik

    Price: 1750 GBP (2004)
    [Exotik picture]

    Majik & Majik I (integrated)

    Price: 975 GBP (2004)
    Linn Helpline said in December 2002: "there has been no sonic improvements made to them since its launch"
    Majik I released in 2008, the first integrated amp since the original Majik-I (discontinued in 2001).
    [Majik picture] [Majik I picture]
    change when serial
    Phono input changed from MM/MC to only MM. At the same time, the variable PSU was exchanged for a single voltage Brilliant PSU. May 1997 7570

    Intek


    Price: 498 GBP (1990)
    Introduced Jan 1990, discontinued Jan 1994
    [Intek picture]
    change when serial
    PCB changed from single sided to double sided board. Improved performance & reliability Jun 1990 501,372
    Overall gain reduced by 6dB. Improves low level control of volume and provides increase of overload margin for CD input. Nov 1990 502,700
    Upgraded output diodes. Improved sonic performance & reduced distortion Jan 1991 502,852
    Volume control poten tiometer upgraded Improved reliability of volume control. Jan 1991 502,989
    Major upgrade:
    • Reduction in THD (total harmonic distortion) in power amp stage
    • Gain increase of 6dB in pre-amp section
    • Power amp idling current reduced
    • Thermistor raised up off board (reliability enhancement)
    Sep 1991 504,695

    Kisto

    Price: 7995 GBP (2004), 12995 USD (2005), 14700 USD (2009)
    Introduced 2003. Dropped from Linn support in Sep 2017.
    [Kisto picture]
    software upgrade when changes
    SP034V1 ?? Problems Fixed:
  • Fixes for timings for ACK replies to RCU (Making RCU appear more responsive) and status replied to status requests from RCU (Making RCU appear to see the Kisto and its current settings)
  • Commands implemented to allow the H8 to set the local loop through to be setup on the CPLD. This is used when the Kisto is setup in the main room. This allows the RCU to properly control main room Linn sources when setup using a parallel line driver. (For the Kisto to function correctly with a line driver, the CPLD code must also be updated, ICAS099/L2R1)
  • Change over on type of communications between the H8 and the power PC. The communications used to indicate the start and stop of IR and now all IR bursts are sent to the power PC. Occasionally there was corruption of the communications between the devices which meant that some commands were being missed. (This requires that the H8 be upgraded with SP035V1, it is recommended that the H8 be uploaded after the Kisto).
  • Change the FPGA to bypass the On Screen Graphics clamping to allow HDV (High Density Video) pass through.
  • Change the User interface to support HDV pass through with the addition of a video type "YPrPb-HDV". This requires that the video board be at least revision PCAS 338/L1R5
  • Addition of the Audio Adjust command to work between a Kisto and Unidisk via the RC5 loop.
  • 3.1.3 ??
  • Source type "cable" has same RC5 address as Aux1
  • In Line Driver mode the headphones disrupt the record path.
  • pop and click when skipping a DTS 96:24 music disc.
  • Lip Sync not available on DTS.
  • Press and Hold on the Unidsk link does not function, ie. search and repeat all.
  • IR control of some 3rd party TV's not functioning.
  • Does not support RGB-HV HDV.
  • AAC decode for Japan not yet supported.
  • SP034V4 ??
  • RS232 Pass through support enabled.
  • Improved RS232 control set.
  • Exessive trims resolved when speakers are not used.
  • Exessive downmix options resolved when speakers are not present.
  • Occasional audio drop out resolved.
  • Unidisk link uses SPDIF for DTS CD's.
  • LtRt Downmix selectable, previosuly was LoRo Downmix.
  • Improvements to RCU Unidsik transport commands with link.
  • Eject on RCU for Unidisk is implemented.
  • Improved disc definitions for the RS232 link to a Unidisk.
  • Improved Pro-Logic II flag detection.
  • Dynamic adjustments of Pro Logic II Music parameters.
  • Improved disc format display with Unidsisk Link
  • Spanish and Geerman characters on the VFD resolved.
  • SP035SP1 ??
  • A) Fixes for timings for ACK replies to RCU (Making RCU appear more responsive) and status replied to status requests from RCU (Making RCU appear to see the Kisto and its current settings)
  • B) Commands implemented to allow the H8 to set the local loop through to be setup on the CPLD. This is used when the Kisto is setup in the main room. This allows the RCU to properly control main room Linn sources when setup using a parallel line driver. (For the Kisto to function correctly with a line driver, the CPLD code must also be updated)
  • C) Change over on type of communications between the H8 and the power PC. The communications used to indicate the start and stop of IR and now all IR bursts are sent to the power PC. Occasionally there was corruption of the communications between the devices which meant that some commands were being missed.

  • Kinos

    Price: 7995, and with DSP 8895 USD (2005), 8430 USD (2009)
    Introduced 2005. Dropped from Linn support in Sep 2017.
    Essentially running the same OS as the Kisto but in the smaller chassis, less connector options and without the dedicated mono channel architecture.
    [Kinos picture]

    Klimax (Solo, Twin)

    Price:
    Solo: 6000 GBP (2004), 8150 GBP (2015), 8850 (2017)
    Twin: 4500 GBP (2004), 7100 GBP (2015), 7700 (2017)
    Description (from Linn's site):
    Solo: The discrete bipolar design is unique to the Solo and uses Linn's famous Dynamik switch mode power supply to deliver 500 W (into 4 Ohms) of effortless, instant power across the entire frequency range. Precision-engineered enclosure machined from solid aluminium.
    Twin: Two channels of Linn's patented Chakra amplification, a machined-from-solid enclosure, and a Dynamik Power Supply make this our highest performing stereo amplifier.
    [Klimax picture]

    change when serial
    Standby time changed from 10 to 20 min. Jul 1999 1223
    Small mod to the PSU, perhaps as a precautionary measure as some early units ran hot. Nov 1999 1675
    Dynamik PSU. Earlier cases require extensive machining to allow these PSUs to fit ? 657850

    Akurate (2200, 3200, 4200)

    Price:
    2200: 3350 GBP (2015), 3630 GBP (2017)
    3200: 4100 GBP (2015), 4450 GBP (2017)
    4200: 4850 GBP (2015), 5270 GBP (2017)
    Akurate 200W per channel (into 4 Oms) amplifier with models available for 2, 3 or 4 channels.
    The 2200 is a 2 channel, the 3200 is a 3 channel and the 4200 is a 4 channel power amp.
    Internal links in Chakras were added during the second half of 2005. It has been reported that a C6100 that has one board with links (stamped Dec 2005), the other without (stamped July 2005), so pretty much everything from Jan 2006 onwards is likely to have links, but you need to check.
    [Akurate picture] [Akurate picture]

    Majik (2100, 3100, 4100, 5100, 6100)

    Price:
    2100: 1575 GBP (2015), 1710 GBP (2017)
    3100: 1970 GBP (2015), 2140 GBP (2017)
    4100: 2220 GBP (2015), 2410 GBP (2017)
    5100: 2470 GBP (2015), 2680 GBP (2017)
    6100: 2720 GBP (2015), 2950 GBP (2017)
    Majik 100W per channel (into 4 Oms) amplifier with models available for 2, 3, 4, 5 or 6 channels.
    The 2100 is a 2 channel, the 3100 is a 3 channel, etc.
    [Majik picture] [Majik picture]

    Klout

    Introduced Jun 1992, discontinued Oct 2002
    "Klouts, as with many long standing Linn products, have undergone several changes - none have been as earth shattering as say putting a brilliant power supply in a Kairn but have improved the sound of the amp. Notably, serial number 2700 there was a shim mod that improved sound qualtiy, serial number 4700 (approx) shake proof washers were added to improve grounding and serial number 5179 they added a capacitor on the transformer connector on the main board which further improved sound qualtiy. The new ones do sound better but the old ones are still great. As far as the crossovers, from serial numbers 200 - 1165 there is a tad bit of mucking around to convert them to aktiv but under 200 serial number and over 1165 it is a very basic procedure - quite a similar connection as the LK140." [Klout picture]
    change when serial
    Aktiv connector replaced with new type. Aktiv link now soldered in place (previous to this it was a mechanical link) Nov 1992 530
    Shake-proof washers added to screws that hold transformer in place to improve earth continuity. This improved the sound quality. Dec 1992 592
    Added cut-out under rear foot to allow easier access to right hand channel Aktiv link. Apr 1993 1,165
    Aktiv link added to board (previously Aktiv link had been soldered, as an addition, onto the socket) Mar 1993 1,201
    Piggy-back board (PCAS 161) upgraded to improve stability of protection circuitry. Nov 1993 1,800
    Main board (PCAS 160) upgraded to improve Aktiv card compatibility ? ?
    Shim mod (Mica washers) fitted as standard between power transistors on main board and coupling block. Sound improvement mod. Nov 1994 2700 approx.
    Chokes (ferrite rings) fitted to transformer output leads to solve a problem found in a small percentage of Klouts whereby a short mechanical buzz is heard when unit switched on. Mar 1996 3,796
    Extrusion finish changed to textured paint cosmetic change only Jun 1997 4,586
    Shake-proof washers added to screws that hold base-plate on to extrusion to improve earth continuity and prevent screws loosening in transit. This improved the sound quality. Jun 1997 4,700 approx
    Speaker sockets changed to safety compliant type. Mar 1998 5,000
    Capacitor added to Transformer connector on main board to improve the Klout's immunity to electromagnetic emissions. This improved the sound quality. Jul 1998 5,179

    AV2250

    Price: 1995 GBP (2004)
    Introduced Sep 2002, discontinued Apr 2005
    Somewhere along the line the AV2250 performance is said to have improved markedly. S/N unknown to me. The talk of this change as an important mk1/mk2-distinction is judged by some as pure nonsense. [AV2250 picture]

    AV5125

    Price: 1800 GBP (2004)
    Introduced 2001, discontinued Apr 2005
    I know of two changes to the AV5125:
    • 1) thermal protection circuits of the first versions were apparently a little too eager, making it shut down needlessly often - this has been fixed.
    • 2) somewhere along the line the AV5125 performance is said to have improved markedly.
    For both of these changes, unfortunately I do not know the S/N.
    [AV5125 picture]

    AV5105

    Introduced June 1996, discontinued March 2002
    [AV5105 picture]
    change when serial
    Speaker sockets changed from 4mm sockets to binding posts Sep 1996 N/A
    Speaker sockets changed from binding sockets to "Safety Compliant" type sockets Aug 1997 N/A

    LK85/LK140

    Price: 545, 875 GBP (2004)
    Introduced Mar 1998
    [LK140 picture]
    change when serial
    Monolithic (power amplifier) IC's changed. This was mainly due to supply problems with original type but this also gave us the opportunity to change over to a slightly more robust part. Feb 2000 6,154

    It is worth mentioning that LK85 and LK140 are very similar amps; they even share the very same circuit board! Any information here regarding one of them probably applies to the other aswell, although I can't guarantee it. Do not be fooled into thinking they sound the same though. Although logic suggests they should, they don't. LK85 is a very good amp, but LK140 is better.

    LK100

    Early specimens had a nice Holden&Fischer transformer, while later ones got a somewhat less good irish transformer. Don't know the S/N for this change.
    The earthing of the case has changed a few times, an improvement might be realized by scraping and cleaning the connection points between screw holes and case (below board)
    [LK100 picture]
    change when serial
    needs re-soldering to unconnect the aktiv wire harnessess which connect directly to the main board and some resistor reinsertion into the board. ? <3000
    the aktiv cards are hooked up similarily to the LK140 conenction and the wire harnesses are simply removed and the links resoldered. ? >3000

    LK240

    All LK240's were subject to a recall regarding the power caps, this should have been already done.
    [LK240 picture]
    change when serial
    Small circuit mod ? ~1000
    Safety speaker plugs were used ? >3000

    LK280

    Price: 695 GBP (1990)
    [LK280 picture]

    LK2 (75/80/+Spark)

    Introduced Oct 1985, discontinued Dec 1992
    change when serial
    Silicone pads removed from heatsink to improve heat transfer Apr 1986 202,505
    LK2-75 Introduced upgraded boards from 60 watt to 75 watts per channel Apr 1987 203,900
    Power supply reservoir capacitors upgraded from 6800uF to 10000uF.Power supply capacitors changed from 4700uF to 10,000uF Mar 1988 203,900
    LK280 introduced upgraded boards from 75 watt to 80 watts per channel (changed boards from PCAS 003s to PCAS 020s) Jul 1988 205,272
    Cannon sockets screwed onto board instead of soldered U bracket Dec 1989 208,610
    Paintwork changed from smooth finish to hard textured finish Jun 1989 208,700
    Spark power supply introduced. LK280/Spark introduced (no transformer) as an option and LK280 upgrade kit for spark made available. May 1990 N/A

    AV5120, AV5140 & AV5150
    (Ekwal/Espek/Melodik)

    Price: 795, 2500, 3000 GBP (2004), upgrade stands for Espek (pair) 275 GBP (2004)
    I believe marketted as an AV set in 1999 with 5103 & 5125 and Kan IV's or Katan's (as rear speakers) for surround systems. This range were later upgraded with new tweeters and crossover units that allowed active configuration just by changing the back plate layout. The upgrade resulted in them getting new names, Ekwal, Espek and Melodik respectively, and the newer oval Linn badge.

    Linn did a recall to replace some capacitors on the amp in the AV5150 so make sure to look for it being done.
    [5120 picture] [5140 picture] [5150 picture]

    Ninka

    Price: 1100 GBP (2004), upgrade stands (pair) 230 GBP (2004)
    Introduced October 2000
    Linn Helpline said in December 2001: "there has been no sonic improvements made to them since its launch", but the tweeter has been changed at least once, from, SPKR 038/1, one with a plastic face plate and small magnet to, SPKR 038/2, one with a metal face plate and a larger magnet. The one in metal is reported to sound better.
    [Ninka picture]

    Katan

    Price: 650 GBP (2004), upgrade stands (pair)(silver,black) 140 GBP (2004)
    Introduced 2000
    Just like the Ninka the Katan has undergone a tweeter change resulting in a reported performance improvement. Also, the passive filter has changed at least once.
    [Katan picture]

    Trikan

    Price: 495 GBP (2004)
    Introduced 2001
    Just like the Ninka & the Katan, the Trikan has undergone a tweeter change resulting in a reported performance improvement.
    [Trikan picture]

    Komri

    Price: 25000 GBP (2004), 47060 USD (2009)
    Klimax Tunebox for Komri 6170 GBP (2017)

    Both the 4-K array and the moulding were originally constructed from cold-set polyeurathene. Upgrading these components to die-cast aluminum significantly increases the structural rigidity of the unit and minimises superfluous drive-unit vibration." This was incorporated into new production at serial number 847451 in May 2003. However this was offered as a free upgrade so older Konris should have been upgraded as long as the dealer and customer stayed in touch.
    [Komri picture]

    Klimax / Artikulat 350, 320, 340, 345

    Price:
    350: 29500 USD (2009), 19900 GBP (2015), 21600 GBP (2017), High Gloss versions add 9500 USD (2009), 1200 GBP (2015,2017)
    350A Aktiv: 39000 USD (2005), 47500 USD (2009), 30600 GBP (2015), High Gloss versions add 9500 USD (2009), 1200 GBP (2015,2017)
    350A Exakt: 41500 GBP (2015),49500 GBP (2017) High Gloss versions add 9500 USD (2009), 1200 GBP (2015,2017)
    320: ?
    320A: 22000 USD (2005), 25750 USD (2009), 14000 GBP (2009), High Gloss versions 25300 USB (2005), 30900 USD (2009)
    340: ?
    340A: 17000 USD (2005), 17990 USD (2009), High Gloss versions 19550 USB (2005), 21560 USD (2009)
    345: 7000 USD (2005), 7270 USD (2009), High Gloss versions 8050 USB (2005), 8830 USD (2009)
    Matching stands for the 320/A 1025 USD and 340/A 515 USD (2005).
    Artikulat 350 Upgrade Stand (Solid stand upgrade to Klimax specification) 1300 GBP (2017)
    Klimax Tunebox for Klimax 350 is 5150 GBP (2017)
    Dynamik Upgrade for Klimax or Artikulat 350A 2770 GBP (2017)
    Dynamik Upgrade for Klimax or Artikulat 350 2090 GBP (2017)
    Dynamik Upgrade for Klimax or Artikulat 340A 1070 GBP (2017)
    Dynamik Upgrade for Artikulat 340 860 GBP (2017)
    Dynamik Upgrade for Klimax or Artikulat 320 or 320A 1640 GBP (2017)
    Exakt & Katalyst upgrade for Klimax/Artikulat 350/350A 27800 GBP (2017)
    Katalyst Upgrade for Klimax 350 is 6800 GBP (2017)

    CHAKRA amplification also features Linnís Switch Mode Power Supplies and facilitates fully integrated AKTIV configuration (denoted by the 'A' following the number of the model, e.g. 350A) for improved performance in comparison to passive set-up.
    The Klimax 350 and 350A were developed from the Artikulat. Linn re-designed the servo control loop to give a much improved bass system. It is faster than the Artikulat with lower distortion. The 3k array was changed (but not the midrange or bass), and as a result Linn had to re-design the crossovers for both passive and aktiv variants, when doing this Linn employed knowledge gained during the development of the Komri Aktiv Tunebox amongst other products. The result is a more open, larger soundstage, which makes the Klimax speakers easier to follow the tune than the Artikulats were. The new stand again makes the tune easier to follow.
    The servo system in the 350 and 350A have a bridged amp for each drive unit, the rated power is the same as in Komri, but they are based on the Akurate power amplifier range. There is a shared Power supply between the servo amps, and another power supply is shared between the other four channels in the 350A.
    The passive versions of the 320 & 340 were dropped at some point and as of 2017 only the Klimax 350 Aktiv and 350 Passive are still available.

    The Artikulat speakers had the following adjustments:
    Treble level 0dB, -1.5dB, -3dB (Not on passive models)
    Bass level 0dB, +2dB, +4dB
    Bass Roll on 19Hz, 40Hz, 80Hz (350 and 340)
    Bass Roll on 50Hz, 80Hz, 100Hz (320)

    The Klimax speakers have the following:
    Treble level -1.25dB, 0dB, +1.25dB (Not on passive 350)
    Bass level -2dB, 0dB, +2dB
    Bass Roll on 19Hz, 40Hz, 60Hz (350 and 340)
    Bass Roll on 30Hz, 60Hz, 98Hz (320)
    [Artikulat picture]

    Komponent 110, 104, 106, 120

    Price:
    110 Floor: 1150 USD (2005), 850 USD (2009)
    104 Compact (pictured on stand): 500 USD (2005), 375 USD (2009), stand 200 USD (2009)
    106 Centre: 1000 USD (2005), 750 USD (2009)
    120 Sub: 1500 USD (2005), 1095 USD (2009)
    [Komponent picture]

    Majik 109, 112, 126, 140

    Price:
    109: 1590 USD (2009), 935 GBP (2015), 990 GBP (2017), High Gloss Colour versions add 450 GBP (2015,2017)
    112: 1200 USD (2009), 725 GBP (2015), 790 GBP (2017), High Gloss Colour versions add 300 GBP (2015,2017)
    126: 2200 USD (2009), 1460 GBP (2015,2017), High Gloss Colour versions add 300 GBP (2015)
    140: 2995 USD (2009), 1660 GBP (2015), 1800 GBP (2017), High Gloss Colour versions add 600 GBP (2015,2017)
    109 high quality stand (pair) - 210 GBP (2017), Wall mount Brakit 33 GBP (2017)
    Majik 140 Upgrade Stand (Aluminium stands for better performance) 430 GBP (2017)
    [Majik 109 picture] [Majik 112 picture] [Majik 126 picture] [Majik 140 picture]

    Akurate 242, 212, 225, 226

    Price:
    242: 10570 USD (2009), 9317 EURO (2013), high gloss add 726 EURO (2013)
    212: 6340 USD (2009), 5590 EURO (2013), high gloss add 484 EURO (2013)
    225: 4230 USD (2009), 3727 EURO (2013), high gloss add 363 EURO (2013)
    226: 3750 USD (2009), 3207 EURO (2013), high gloss add 726 EURO (2013)
    Originally the sub was call 221 as it was a 21 litre enclosure but this later changed to the 226 being a 26 litre enclosure. The picture looks the same. At this point I don't know when or the serial numbers.
    Also Aktiv cards - 195 GBP (2004), 320 USD (2009), 105 GBP (2017)
    Klimax Tunebox for Akurate 242 is 5150 GBP (2017)
    Akurate 242 Upgrade Stand (Solid stands to upgrade early models) 860 GBP (2017)
    212 high quality stand (pair) - 550 GBP (2004), 950 USD (2009)
    225 high quality stand (single) - 275 GBP (2004), 480 USD (2009)
    Introduced 2003.
    [Akurate 242 picture] [Akurate 212 picture] [Akurate 225 picture] [Akurate 226 picture]
    change when serial
    During the lifetime of the mk1 242s a change was made to the internal connectors used to link the cable harnesses to the crossovers. ? ?
    Work was done to ensure Linn could continue selling the Akurate speaker range and was never actually called an 'upgrade' but rather an update. The changes were to the 3K Array (which also changed in the Artikulat when we re-designed it to become Klimax) and the bass drivers. To achieve this Linn also changed the passive crossovers, aktiv crossovers and port lengths. Due to the extent of the changes (all but the cabinet and stand) we never offered an 'upgrade' as this would essentially require re-building the speakers from scratch at Linn HQ, a rather expensive upgrade. 2007 ?
    MK2. Also changes were to all of the drive units (new array specification and new bass driver) and crossovers on the 212. ? 1144285
    New Stands available, which also fit the Mk1, a worthwhile upgrade. ? ?
    AKURATE 242 Mark 1, used with aktive cards; CHAKT01, CHAKT02, CHAKT03, CHAKT04, CHAKT05 ? before 1144285
    AKURATE 242 Mark 2 uses aktive cards CHAKT57, CHAKT58, CHAKT59, CHAKT60, CHAKT61 ? 1144285

    Keilidh

    Intrdoduced Sept 1992, discontinued
    [Keilidh picture]
    change when serial
    Treble Unit change (From SPKR 015/1 to SPKR 015/2) Oct 1994 23,647/8
    Treble unit upgraded to SPKR 015/3* Dec 1996 39,727/8
    Bass/mid units upgraded from SPKR 013/2 to /4 Feb 1997 40,657/8
    Tri-amp Keilidh considerations When using two amplifiers for the Mid/Bass drivers of the Keilidh loudspeaker we recommend that you use matching Aktiv boards (see tables below), as this will ensure the best performance from the system. Treble boards are not affected. Stereo filters: apparently some change at S/N 7040

    MONO Boards

    Part Number Description serial
    Keilaktbass [Original Mono Boards] >3000 7040
    Keilaktbass [New Mono Boards] >3000 7040

    STEREO Boards

    Part Number Description serial
    Keilaktbass/s [Stereo Board(REV1)] >3000 2089
    Keilaktbass/s [Stereo Board(REV2)] >3000 2089

    Aktiv BASS Board Combinations - Recommended

    Amplifier No.1 & Amplifier No.2
    New Mono Boards & Stereo Board (REV2)
    Stereo Board (REV1) & Stereo Board (REV1)
    Stereo Board (REV2) & Stereo Board (REV2)

    Aktiv BASS Board Combinations - NOT Recommended

    Amplifier No.1 & Amplifier No.2
    Original Mono Boards & New Mono Boards
    Original Mono Boards & Stereo Board (REV1)
    Original Mono Boards & Stereo Board (REV2)
    New Mono Boards & Stereo Board (REV1)
    Stereo Board (REV1) & Stereo Board (REV2)
    The ceramic plinth (their "feet") that was available separately changed at some point too. The change to the feet probably applies to Kabers aswell.

    Akubarik

    Price:
    Passive: 8750 GBP (2015), 9500 GBP (2017), high gloss add 950 GBP (2015,2017)
    With Exakt: 23000 GBP (2015), 25000 GBP (2017), high gloss add 950 GBP (2015,2017)
    [Akubarik picture]

    Akudorik

    Price:
    Passive: 4500 GBP (2015), 4900 GBP (2017), high gloss add 600 GBP (2015,2017)
    With Exakt: 15000 GBP (2015), 16300 GBP (2017), high gloss add 600 GBP (2015,2017)
    [Akudorik picture]

    Series 5

    Price:
    530: 9500 GBP (2017), Premium fabrik cover 9850 GBP (2017)
    520: 6750 GBP (2017), Premium fabrik cover 7100 GBP (2017)

    Series 5 Pair of standard collection covers 350 GBP (2017), Premium covers (Harris Tweed or Timourous Beasties) 700 GBP (2017)
    530 spares: Pair of replacement Top Plates 165 GBP (2017), replacement stands 450 GBP (2017)
    520 spares: Pair of replacement Top Plates 145 GBP (2017), replacement stands 220 GBP (2017)
    [series picture]

    Kaber (inc LS500/2)


    Introduced 1989, discontinued 1999

    Kaber LS500 Price: 989 GBP 1990

    Someone referred to a pair of Kabers as "latest kaber version [...] post 97".

    From Linn helpline: "The last upgrade to the Kaber went through at serial number 14022 - Kabers after that serial number are latest specification."

    [Kaber picture]
    change when serial
    Cabinet: Design change - baffle attached with screws and glue. Bass Unit: Improved sound quality - unit changed from SPKR 007/1 to SPKR 007/2. Sep 1989 2,967/8
    Crossover: Changed treble response - resistor value changed from 2.7 ohm to 3.3 ohm. Feb 1991 6,245/6
    Major upgrade including new treble unit, mid range unit and crossovers. Cabinet damping improved. Mid range inserts changed from M4 to M5. Jun 1991 6,813/4
    Kaber LS500/2 introduced Sep 1992 N/A
    From Kaber/1 to Kaber/2 - New crossovers and midrange unit 1994 12,067/8
    Treble Unit change(From SPKR 015/1 to SPKR 015/2) Oct 1994 12,067/8
    Mid-range unit upgraded from SPKR 007/4 to /5 Dec 1995 13,389/90
    Treble unit upgraded to SPKR 015/3* Dec 1996 14,021/2

    Index


    Introduced 1985, discontinued 1992
    Index II Price: 219 GBP (1990)
    Stands 50 GBP (1990)
    [Index picture]
    change when serial
    Index Plus introduced incorporating cabinet material change: Drive unit positioning changed;crossover modification, improvement in treble response. Sep 1986 10,137/8
    Crossover: Improved layout May 1987 17,319
    Bass Unit: New style unit, strengthened surround and new cone material. June 1987 17,947/8
    Treble Unit: Front mountingplate made thicker and larger. Now incorporates the Linn Logo. Aug 1987 18,701/2
    New Design: Index II introduced incorporating changes to the crossover to allow bi-wiring options; new style cabinet with removable facia; change to new type speaker connectors. Mar 1990 1,001/2*
    Crossover: Resistor in treble section changed to improve treble response. Feb 1991 9,339/40
    Grille: Changed from twopart cloth and facade to facade moulded complete with Grille cloth. April 1991 11,435/6
    *Serial number re-started at 1,001/2 for the Index II

    Helix


    Introduced 1988, discontinued 1993
    Helix II Price: 329 GBP (1990)
    [Helix picture]
    change when serial
    Helix II introduced incorporating changes to cabinet facia, crossover and treble units (SPKR 011/2) now ferro-cooled. Feb 1990 1,001/1
    Stand Inserts: Two inserts added to accommodate Ku-stone stand. Mar 1990 10,599/60
    Crossover: Treble response improved by changing a resistor value on crossover Feb 1991 13,395/6
    Bass Unit: Upgrade SPKR001/M2 replaced by SPKR 001/M3. Now includes flux ring. M2 no longer available, so if replacing do so in pairs. Aug 1991 16,087/8
    Note: For spare purposes, original Helix 1 treble unit (SPKR 005/1) has been upgraded to Nexus treble unit (SPKR 010/1). This will improve performance and slightly increase power handling.

    Nexus

    Introduced 1987, discontinued 1993
    [Nexus picture]
    change when serial
    Crossover: Added two capacitors. Damping added in speaker port. Sep 1988 10,617/8
    Baffle: Colour changed from light gray to dark grey. Oct 1988 11,216/2
    Stand Insert: Changed to diagonal layout on base of speaker. Oct 1988 11,611/2
    Cabinet: Changed from back panel mounted crossover to internally fitted on back of cabinet. Sockets changed to colour coded type. Dec 1988 12,129/30
    Wooden cabinets introduced in walnut and black ash finishes. Walnut
    Black Ash
    15,721/2
    15,723/4
    Introduced Nexus/4: New crossover and treble unit. (2E-140/H repl by SPKR 010/1) Aug 1989 17,219/20
    Bass Unit: Change from M1 to M2 - improved spider. Nov 1989 18,409/10
    Stand Inserts: Two inserts added to accommodate the Ku-stone stand. (except serial nos. 19,555 - 19,578) Feb 1990 19,487/8
    Crossover: Change to treble response on crossover. Resistor value changed. Feb 1991 24,833/4
    Bass Unit Upgrade: SPKR 001/M2 replaced by SPKR 001/M3. Now includes flux ring. M2 no longer available, so replace in pairs. Aug 1991 26,443/4

    Kan


    Introduced 1979, discontinued 1993
    Kan II Price: 379 GBP (1990)
    Stands 89 GBP (1990)
    [Kan I picture] [Kan IV picture]
    Change When Serial
    Introduction: Scanspeak tweeter. Original unmodified KEF B110 bass drivers. Cabinet essentially made of chipboard. The speaker used 4mm binding posts. Pre 1982  
    Cabinets: Changed to Medite cabinet and began doping the B110 with some sticky black mastic for damping purposes. 1982  
    Tweeters: Change to Hiquphone tweeters, which gave a flatter response. Having the Linn logo printed on the front plate, along with "LINN PRODUCTS" identifies these. The plate also has 2 concentric circles printed on it. May 1984 24,077
    Connections: Changed from binding posts to the new style 4mm sockets. Feb 1985  
    Bass Unit: Change to new long throw low frequency driver Kef B110B. May 1985  
    MajorRevision: Kan II introduced: this involved a change to a biwirable crossover (with 4 sockets) and a move in the tweeter positioning (mounted 7mm more forward than before on an substantially improved front baffle). Jan 1989  
    Cabinet: Damped with KuStone and drive units are mounted with discrete gaskets instead of mastic. This was the final incarnation of the Kan. Sep 1991 48,489

    Version IV looks like the Katan but is not bi-wire-able.
    Change When Serial
    Drive Units: Bass units painted with sound deadening paint - silicone sealant Mar 1982 18,501/2
    Unit Damping: Unit painted with sound deadening material.
    Cabinet: Material changed to medite.
    May 1982 19,153/4
    Crossover: Resistor added in parallel to treble coil. Feb 1983 20,005/6
    Treble Unit: Smoother response. Linn logo incorporated on front plate. Crossover revision. May 1984 24,077/8
    Sockets: Changed to Linn 4 mm metal socket. Crossover change. Feb 1985 26,791/2
    Bass Unit: Improved performance. Dec 1985 33,005/6
    Crossover: Capacitors improved to Bennic type. Feb 1988 39,005/6
    Kan II introduced: Incorporates changes to crossover; bi-wired option; change in position of treble unit. Jan 1989 41,905/6
    Crossover: Revision no. changed to PCAS 134/L4R4 Mar 1989 42,601/2
    KU-STONE Fitted to speakers, units now fitted with gaskets instead of silicone. (Upgrade not retrofittable) Sep 1991 48,489/90
    Note a pair of Kans with serial numbers 16,8xx were reported as constructed in Sep 82 which puts the 1982 serial numbers above in question.

    Isobarik

    Price: 1875 GBP (1990)
    Stands 106 GBP (1990), Passive Crossover 423 GBP (1990), Stand Panels 89 GBP (1990)
    Change When Serial
    Cabinet: Current cabinet style adopted. Sep 1976  
    Damping: Midrange enclosure and cabinet damping changed. Sep 1978 10,283/4
    Midrange Unit: Vented. Nov 1979 10,800/1
    Treble Unit: Scanspeak treble unit replaced with Hiquphon unit. Recognised by two concentric rings on unit. Feb 1980 10,925/6
    Wiring: Changed internally to common earth at cannon socket. Mar 1980 11,035/6
    Treble Unit: Fitted with t-nuts. Oct 1981 2,741/2
    Cabinet: Changed from chipboard to MDF and veneered on both sides. Jan 1982 2,859/60
    Bass/Midrange Units: Sound-deadening material painted on bass and midrange units. Mar.1983 3.000/1
    Crossover/Treble Units: Improved PCB with wider tracks and better layout. Treble units also changed to give a smoother response. Linn logo incorporated on front plate. May 1984 3,939/40
    Cabinet: Construction improved (internal sealing and damping) Dec 1985 4,825/6
    Midrange Units: Improved rubber surround to harder rubber Apr 1986 4,953/4
    Cabinet: Crossover now in bottom of speaker - accessible from underneath. Facility for converting easily to tri-wiring or to active. 1987 5,575/6
    Treble Unit: Cosmetic improvement. Fitted with countersunk screws Sep 1987 6,201/2
    Crossover: New 4 ohm external fitted in stand. Facility for tri-wiring. DMS no longer made as PMS can be used with either passive (4 ohm) or Aktiv crossover. 1988 6,701/2
    Speaker: Major Upgrade: Addition of KU-STONE ceramic absorber, units and back now sealed with gaskets instead of silicone, improved cabinet bracing (Upgrade not retrofittable) Dec 1991 8,293/4
    [Isobarik picture]

    Sara

    Introduced 1978, discontinued 1989
    Price for Stands 95 GBP (1990)
    [Sara picture]
    change when serial
    Baffle: Changed from welded plastic to one piece moulded carbon filled ABS with removable ring for front bass unit. Bass unit venting increased. Oct 1979 10,280/81
    Drive Unit: Sealer changed from mastic to silicone sealant. Jan 1980 10,440/1
    Unit Damping: Painted with sound deadening paint. Cabinet Material: Material change; now has rounded front. Mar 1982 10,850/1
    Crossover: Resistor added in parallel with treble coil. Feb 1983 13,249/50
    Treble Unit: Smoother response. Incorporates Linn logo on front plate. May 1984 14,731/2
    Bass Unit: Surround changed to plastic material. May 1985 16,051/2
    Sockets: Replaced cannon sockets with two 4 mm sockets. Jun 1985 16,300/1
    Sara 9: Introduced, incorporating changes to treble unit (countersunk screws), bass unit (white disc removed and plastic surround changed to thicker rubber), crossover (now 4 ohm) Sep 1987 18,299/300
    Crossover: Bi-wiring introduced to Sara 9. Oct 1988 20,913/4

    Diskreet

    Price: 195 GBP (2004)
    [Diskreet picture]

    Sekrit IN-Wall

    Introduced April 1994

    Sekrit ON-Wall

    Introduced Dec 1994
    [Sekrit picture]

    Centrik

    Introduced July 1994, discontinued April 1996 (replaced by AV5120)
    [Centrik picture]
    change when serial
    Treble Unit change (From SPKR 015/1 to SPKR 015/2) Oct 1994 1,262

    Sizmik 10.25, 12.45

    Price: 995, 1775 GBP (2004)
    [Sizmik picture]

    Unik

    Price: 125 GBP (2004)
    Classik Speaker package comprising of 5x Unik and 1x Afekt - 1325 GBP (2004)
    [Unik picture]

    Afekt

    Price: 750 GBP (2004)
    Classik Speaker package comprising of 5x Unik and 1x Afekt - 1325 GBP (2004)
    [Afekt picture]

    Tukan

    Introduced Nov 1993
    [Tukan picture]
    change when serial
    Treble Unit change (From SPKR 015/1 to SPKR 015/2) Oct 1994 5,277/8
    Treble unit upgraded to SPKR 015/3* Dec 1996 15,127/8

    Keltik

    Introduced Nov 1991
    [Keltik picture]
    change when serial
    KELTIK AKTIV crossover replaced by KELTAKTAMP Aktiv crossover boards. See Install manual for details. Aug 1993 N/A
    Metal stand changed to Composite material. Sep 1994 1,043/44
    Treble unit changed from SPKR 015/1 to 15/2 Oct 1994 1,099/100
    KELTAKTAMP Upgrade to Aktiv Bass boards May 1995 (Keltaktamp sn 605)
    Mid-range unit upgraded from SPKR 007/4 to /5 Jan 1996 1,519/20
    Treble unit upgraded to SPKR 015/3 - New treble unit easily identified by 'Bull-bars' instead of Mesh grill. Dec 1996 1,729/30
    There are also additional upgrades available that are not officially endorsed by Linn themselves but often recommended by Linn dealers (will void your warranty):
    Treble unit upgrade to SPKR 038/2 (the so called "Ninka tweeters")
    Mid-range unit upgrade to 007/6

    One reader said that there was also a midrange driver upgrade somewhere around 2000, but that it was of no great sonic importance.

    Aktiv Cards


    There are two types of aktiv board: - mono and stereo.
    Mono fit in LK100/200 and channel-1 of the AV5125 Stereo fit in LK85/LK140/AV5125 (channels 2/3 and 4/5), and the 2250.
    Also there is the Tunebox, which is a chassis for holding Aktiv modules for non-Linn amplifiers - price: 700 GBP (2004)
    The Klimax Tunebox is the tunebox in a Klimax style case - price: 3000 GBP (2004).
    Stereo cards have 2 * bass sections or 2 * treble on the same card, but there is a hybrid card for centre speakers.
    I.E. for 2 stereo speakers you need 4 * mono or 2 * stereo cards for minimum aktiv configuration.
    The cards are all different, except below shows what speakers use the same boards:-
  • 5120/Kelidh/Ninka bass mono cards
  • Tukan/Sekrit/Katan bass mono cards
  • 5120/Tukan/Sekrit/Kelidh/Ninka/Katan treble mono cards
  • Kaber/Keltik treble mono cards
  • Kelidh/Ninka treble stereo cards
  • Kelidh/Ninka bass stereo cards
  • Tukan/Katan treble stereo cards
  • [Aktiv cards picture]

    Cables


    Linn speaker cable prices:
    K10 - Pair complete with terminators 2.5m - 35 GBP (2004), 43 GBP (2017)
    K10 - Pair complete with terminators 5m - 50 GBP (2004)
    K10 - Pair complete with terminators 10m - 70 GBP (2004)
    K10 - per meter - 3 GBP (2004)
    K20 - per meter - 5 GBP (2004)
    K400 Bi-Wire - per meter - 12 GBP (2004)
    K600 Tri-Wire - per meter - 16 GBP (2004)

    Linn Cat5 Knekt cable prices: 25m Terminatated cable - 50 GBP (2004)
    40m Terminatated cable - 75 GBP (2004)
    60m Terminatated cable - 100 GBP (2004)

    Linn Interconnects prices:
    Silver Balanced XLR Interconnect cable 1.2m - 100 GBP (2004), 120 GBP (2017)
    Black Balanced XLR Interconnect cable 1.2m - 54 GBP (2017)
    Pair Silver interconnect - 200 GBP (2004), 230 GBP (2017)
    Pair Black interconnect - 75 GBP (2004), 87 GBP (2017)

    Power cables are said to have improved over the years (IIRC, Fredrik Lejonklou made some posts about this in the Topica forum, a search should turn them up), while no indications of changes to the standard Linn Black analogue cable have been noted (although newer analogues have a different feel to them). The Silver Cable seems to be unaffected thus far.

    Quote from Samurai7595 off the Linn Forum: "I once had a discussion with a Linn engineer and was told that due to their Switch Mode Power Supply (SMPS) technology, it would be a total waste of money to replace the Linn-supplied power cords. The engineer went on to say that if power cords would make a different (for the better), Linn would offer these. As a matter of fact, I was told that all Linn components (including the Klimax line) are supplied with the same power cords."

    Miscellaneous bits and pieces


    REM 007 (5101 Handset, Universal remote control) - 250 GBP (2004), 595 USD (2009)
    REM 008/2 (Ikemi, Genki, Pekin, Classik MUSIC remote control) - 80.55 USD (2009)
    REM 009/1 (Kairn, Wakonda, Kolektor remote control) - 64.61 USD (2009)
    REM 016/A (original Kinos, Kisto, Unidisk remote control) - 151.06 USD (2009)
    REM 018 (Klimax Kontrol, Sondek CD12, Klimax DS remote control) - 165.67 USD (2009)
    REM 019 (new remote for Movie05, Unidisk, Exotik, Kisto, Kinos, Majik, Akurate) - 136.50 USD (2009)
    5110 Grilles (black/white/silver/green/blue - also fits the Classik Unik loudspeaker - 25 GBP (2004)
    Pair Katan Grilles - 88 GBP (2004)
    Pair Ninka Grilles - 118 GBP (2004)
    Linn XLR - 2x Male & 2x Female connectors for silver balanced interconnect cable - 90 GBP (2004), 100 GBP (2017)
    Phono Plugs - Pack 2 red and 2 white high quality phono plugs - 90 GBP (2004), 100 GBP (2017)
    Phono Plugs - Pack 6 red and 6 black standard phono plugs - 55 GBP (2004), 65 GBP (2017)
    Brakit - Universal Loudspeaker wall bracket (pair) black/white - 50 GBP (2004)
    Corner Brakit - Loudspeaker corner bracket (pair) - 50 GBP (2004)
    Classik Brakit - Single wall bracket for the Classik Unik loudspeaker - 25 GBP (2004)
    Classik Kolum - Pair of Dedicated Floor Stands for the Classik Unik loudspeaker - 195 GBP (2004)
    Skeet - Floor protectors - 50 GBP (2004), 54 GBP (2017)
    Kan Stands (pair) - 135 GBP (2004)
    Rakk-19 - 19inch Rack mount (black, silver) - 100 GBP (2004)
    Rakk-Kisto - Rack mount for Kisto System Controller (black, silver) - 100 GBP (2004)
    Knekt Line Driver standalone - 790 USD (2009)
    Knekt Line Receiver 2 with sub zone - 1199 USD (2009)
    Intersekt R4S5 (4 zone/5 source) - 2260 USD (2009)
    Intersekt R8S8 (8 zone/8 source), cannot be expanded - 2260 USD (2009)
    Intersekt RER16 room expander (16 rooms), max number of 8 units for a total of 1280 rooms - 10170 USD (2009)
    Intersekt SES8 source expander (8 source), max of 2 for a total of 16 sources - 4520 USD (2009)
    Knekt Roomamp only (without RCU) - 999 USD (2009)
    Knekt Roomamp 2i with Sub Zone capability - 1899 USD (2009)
    Dekoda (IR translator for non-Linn components in KNEKT system - 840 USD (2009)


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