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Arkless Electronics: Services offered.

Discussion in 'trade discussion' started by Arkless Electronics, Dec 12, 2018.

  1. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    I had a PM a few days ago asking if I still do repairs:eek: Very much so! Here's a synopsis of services offered:

    First of all I'm a specialist in analogue equipment so I don't touch CD players, DAC's, streamers etc. I do build and repair linear PSU's for these.

    I specialise in phono stages, head amps, pre amps, power amps, headphone amps and power supplies, ancient and modern, solid state and valved.

    I do repairs, rebuilds, re-capping, modifications and kit debugging to all brands.

    Some examples:

    Rebuilding of vintage valve amplifiers such as Leak, Quad, Radford, McIntosh, Beam Echo, RCA etc to better than new standard.

    Repairs and rebuilds to more modern valve amps such as Beard, VTL, Audio Innovations, Tube Technology, Jadis, Audio Research etc.

    Repairs, rebuilds, re-capping of vintage Japanese amps and classic solid state gear of other origins such as Sugden, Leak, A&R Cambridge, Quad, Krell, Mark Levinson, Exposure etc.

    Repairs to most modern brands.

    Modifications and improvements such as fitting better op amps and capacitors to phono stages and pre amps, changing input loading on phono stages without user adjustable loading, designing, building and fitting of voltage regulators, installing commercial voltage regulators etc.

    Building of linear power supplies for any application.

    "Weird and wonderful" and "wish list" stuff....

    Want a regulated supply adding to your valve amp?

    Want the phase splitter stage of your Leak Stereo 20 (or whatever) replaced with the Radford topology?

    Want the output stage of your valve pre amp rebuilt to be an improved hybrid stage?

    Want a Quad 303 converted to complementary output stage?

    Want an integrated amp converted into a power amp or pre out/power in sockets adding?

    Want an unusual cable making up?

    Anything you can think of... just ask!

    And there is the Arkless 640P phono stage of course which remains available and excellent VFM.
  2. sq225917

    sq225917 Bit of this, bit of that

    1st rate service from Jez fettling driver stages and replacing output devices during my big krell ksa 200 rebuild.
    Arkless Electronics likes this.
  3. Tarzan

    Tarzan pfm Member

    I can add Jez's Turbo phono stage is really rather good for the money asked.
    Arkless Electronics likes this.
  4. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    A quick bump...
  5. springer

    springer pfm Member

    Hi Jez - chanced on a Leak 2000 receiver last week. All seems to function okay. What do you know about these units? Worth a bit of TLC?? Thanks
  6. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Just seen this....

    The tuner section is very good indeed but the amp is awful. Thin, harsh, grey sounding....
    They are very high tech for the time.
    Usually hardly work when powered up after years of storage and due to muck in switches etc. Lots of pressing the buttons and turning the controls gradually brings in more sources, the other channel etc...
  7. Grez Harvey

    Grez Harvey New Member

    Hi. I've got a mid 80s Onix OA21 that needs a bit of TLC. One channel or both cut out on power up or input switching. After up to 5 minutes, it works fine.

    Any ideas what might be wrong and how much it might cost to repair?

  8. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    PM sent.
  9. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    just bumping it back up... find a space between all the Purite threads!:rolleyes:
    G T Audio and camverton like this.
  10. eevo1969

    eevo1969 pfm Member

    I’ve had a few questions for Jez I the past and he’s always been prompt and polite with his replies, he can be busy though-the price of success I suppose!
    Happy to bump this up;)
    Arkless Electronics likes this.
  11. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Re mods to cathode followers outlined here and also in similar recent threads on Croft etc, ie active loads, changing resistors to optimise bias for other valves etc etc...
    If anyone wants them carrying out PM me.

    No I don't have a clue what subjective differences it could/would make so please don't ask as that would be my reply.

    It would be theoretically better and would measure better, plus, as I mentioned up thread, many say that "standard" cathode followers without active load are a "bottleneck" to dynamics... Google it...

    There's the usual "catch 22" that probably no one will want to try until 20 other people have tried it and posted that they like it... My answer to this? Take it or leave it!:):rolleyes:
  12. Ian G

    Ian G pfm Member

    Hi Jez, a couple of questions.
    I have an Alchemist Forseti APD20A that poped a tweeter and now has one channel playing unamplified.
    I remember reading another post where you said you had worked on them, so
    1) do you think the amp is worth the cost of repairing ? ( I realise you'll need to look at it )
    2) if so is it possible to upgrade it and improve it ? ( it was always very smooth and creamy but I would like more bite ) (( please no urine taking ))
    3) what do you charge to have a look at it ?
    Perhaps you could message me if you are in a position to have a look at it.
  13. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    PM sent.
  14. Dom500

    Dom500 pfm Member

    I have an accuphase e-206 with a right channel that cuts out and a bit of a hum. Could you take a look at it for me?

  15. GuzziMan

    GuzziMan New Member

    Hi Jez,
    I read your post that you are not touching the Alchemist CD players - well noted.
    Nevertheless, you might have some contacts who could help me.
    For my Nexus APD32A CD player I need a new cogwheel driving directly the sledge. (Not the one with the belt which apparently always brakes in Philips CD players.)
    Any change to get such spare part?
  16. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Yep PM me.
  17. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Nope 'fraid not... I don't touch any CD player of any make or type nor do I know anyone who has access or information that I don't.
  18. sq225917

    sq225917 Bit of this, bit of that

    Check the 'Dutch dac list' for details of the transport in your nexus and go from there.
  19. GuzziMan

    GuzziMan New Member

    Thanks gentlemen. Mike from mpacservice could help.
  20. legzr1

    legzr1 Well-Known Member

    PM sent.

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