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Thread: Supreme Sound Audio discrete Op-amp upgrade

  1. #21
    Join Date: Jan 2009

    Location: Essex

    Posts: 15,680
    I'm openingabottleofwine.

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    I would be interested in trying a couple fed from +/- 12V or +/- 15V.
    Have you listened to this month's choice in the Album Club?

    Barry

  2. #22
    Join Date: May 2009

    Location: Stäfa (near Zürich), Switzerland

    Posts: 280
    I'm Richard.

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    Micromega Stage 5



    Only had audio cct smoothing caps replaced with much higher values so far, and a snubber added over the AC winding. The implementation is pretty good on this player, but I will be looking to try different opamps. Supply is +/-10v.

    DAC/Audio PCB;



    OP opamps - note there is no output cap, the pot is to adjust for 0v offset, so final opamp would need to support this;



    Original layout (before silly-sized smoothing caps );



    Richard

  3. #23
    Join Date: May 2008

    Location: Surrey

    Posts: 5,708
    I'm Rob.

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    Internal of CD63 showing Audio GD discrete op-amps.



    For anyone who is interested other mods are a Trichord Clock 4.2, multiple voltage regulators in place of current limiting resistors (some are DIY low noise), a JLH Ripple eater on the PS, Panny Caps replacing standard PS caps, HDAM modules by-passed and other stuff that I probably can't remember
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  4. #24
    Join Date: May 2008

    Location: Surrey

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    I'm Rob.

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    The Op-Amps arrived yesterday and I fitted them today. Initial impressions - very good. Will report back in a couple of weeks time.

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  5. #25
    Join Date: May 2008

    Location: Surrey

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    I'm Rob.

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    Who else got some of these?
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  6. #26
    Join Date: Jan 2013

    Location: Durham - UK

    Posts: 1,318
    I'm Ken.

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    I wasn't aware of this thread till today, but I used the V5 modules in my active x-over for my Yamaha NS-1000M speakers.
    Much better than any of the opamps I tried.

    http://theartofsound.net/forum/showt...M-Tweaks/page9

    I have another 6 on the way.
    Last edited by Qwin; 05-04-2016 at 11:38.
    Ken

    http://www.jkwynn.co.uk/
    DIY Technics/ProJect based Turntable + Terminator linear tracker + Ortofon MC20 Supreme / Pro-Ject Phono box & Pre Box RS / KMTech Active X-Over / Nakamichi AVP1 Power / DIY Sealed Three Way Speakers / Stello CDT100 Transport / DAC Magic.

  7. #27
    Join Date: Jan 2015

    Location: Leeds

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    I'm Dave.

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    Quote Originally Posted by Puffin View Post
    Who else got some of these?
    Not yet. How did they know where to ship them?

  8. #28
    Join Date: Jan 2013

    Location: Durham - UK

    Posts: 1,318
    I'm Ken.

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    Quote Originally Posted by Barry View Post
    I would be interested in trying a couple fed from +/- 12V or +/- 15V.
    I think +/- 15v is the absolute maximum, might be better with +/-12v.

    Check the link to the spec sheet on post #14.
    Ken

    http://www.jkwynn.co.uk/
    DIY Technics/ProJect based Turntable + Terminator linear tracker + Ortofon MC20 Supreme / Pro-Ject Phono box & Pre Box RS / KMTech Active X-Over / Nakamichi AVP1 Power / DIY Sealed Three Way Speakers / Stello CDT100 Transport / DAC Magic.

  9. #29
    Join Date: Jan 2013

    Location: Durham - UK

    Posts: 1,318
    I'm Ken.

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    Quote Originally Posted by Puffin View Post
    The Op-Amps arrived yesterday and I fitted them today. Initial impressions - very good. Will report back in a couple of weeks time.
    I found they take about 50 hours to settle in.
    Ken

    http://www.jkwynn.co.uk/
    DIY Technics/ProJect based Turntable + Terminator linear tracker + Ortofon MC20 Supreme / Pro-Ject Phono box & Pre Box RS / KMTech Active X-Over / Nakamichi AVP1 Power / DIY Sealed Three Way Speakers / Stello CDT100 Transport / DAC Magic.

  10. #30
    Join Date: May 2008

    Location: Surrey

    Posts: 5,708
    I'm Rob.

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    Yup, 48 hours on constantly and ......boom
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