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Thread: Supreme Sound Audio discrete Op-amp upgrade

  1. #11
    Join Date: May 2008

    Location: Surrey

    Posts: 5,885
    I'm Rob.

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    I am interested to know what benefit pictures of the piece of kit that might be chosen to test these devices will be to you. If anyone here has posted an interest in trying these op-amps, then they know what an op-amp is and will have the necessary skill to fit them.
    Buy Bose...And get your parking validated!.

  2. #12
    Join Date: Aug 2013

    Location: London

    Posts: 1,500
    I'm Sam.

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    Because Burson Audio have a lot of testimonials from customers up on their website along with photos - helps people see what can be done and give example of what has already been successful.

  3. #13
    Join Date: Jul 2011

    Location: London

    Posts: 510
    I'm Colin.

    Default Op Amp Replacement

    Hi Charles,

    Have you a technical spec?
    What are the noises figures?
    What is the power rail requirements?

    Best Colin

    Happy New Year

  4. #14
    Join Date: Dec 2015

    Location: Central

    Posts: 14
    I'm Charles.

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    Quote Originally Posted by Puffin View Post
    I am interested to know what benefit pictures of the piece of kit that might be chosen to test these devices will be to you. If anyone here has posted an interest in trying these op-amps, then they know what an op-amp is and will have the necessary skill to fit them.
    As Rob said (and thanks for that), we have a gallery of DIY projects from users all over the world. They are used as a reference for people attempting to do the same modification/upgrade.

    Regarding specs, i'm leaving a link with the Datasheet.

    (V5 Datasheet)

    Thanks so far for your comments and feedback guys, we still need a few participants to start our first round.

  5. #15
    Join Date: Jan 2015

    Location: Leeds

    Posts: 141
    I'm Dave.

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    Quote Originally Posted by SS-Audio View Post
    As Rob said (and thanks for that), we have a gallery of DIY projects from users all over the world. They are used as a reference for people attempting to do the same modification/upgrade.

    Regarding specs, i'm leaving a link with the Datasheet.

    (V5 Datasheet)

    Thanks so far for your comments and feedback guys, we still need a few participants to start our first round.
    I would be interested in trying a couple of dual devices in my active crossover. I only have one opamp per channel in the signal path in my system so it's quite easy to hear the sonic signature if the device in circuit. The electronic crossover is set to 120Hz to integrate my 2-way speakers with my electronically corrected stereo LF system - this has a -3dB @ 10Hz with a 1st order rolloff. I also rolloff the input at 10Hz by capacitor coupling. The reason for these ludicrously low corner frequencies is not to produce bass that induces sickness, but rather to have exemplary transient response at LF. The benefit of this is that bass overhang does not mask the critical mid and treble.

    Looking at the (rather sparse) spec of the VS device it looks like it would work well in this application - assuming it is unity gain stable. The JFET inputs will not cause any accuracy errors in an electronic filter circuit and OL gain should be sufficient.

    I am currently running a pair of OP275s, but have a wide range of opamps to compare with. I use the Technics virtual battery regulator principle (78/7915 and low noise opamp to servo out the noise) and have found this to be the best sounding regulator of the many 10s I've tried.

    I have tried several discrete opamps (e.g. Jensen JE990 and Stan Curtis' System A etc). I have yet to hear a discrete opamp that sounds less intrusive than a good opamp. Hopefully the VS can change this!

    BTW my entire system is home made. There is not much point in posting pics - it's just a few black boxes and some generic looking speakers.
    Last edited by Starterman; 12-01-2016 at 10:50.

  6. #16
    Join Date: Dec 2015

    Location: Central

    Posts: 14
    I'm Charles.

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    Hi Dave,

    You are welcome to participate, our V5 has been widely used on different audio applications with good results. If you have op-amps to compare with that is even better

  7. #17
    Join Date: Jan 2015

    Location: Leeds

    Posts: 141
    I'm Dave.

    Default

    Quote Originally Posted by SS-Audio View Post
    Hi Dave,

    You are welcome to participate, our V5 has been widely used on different audio applications with good results. If you have op-amps to compare with that is even better
    OK Thanks!
    Do you have any recommendations for the best regs to power your VSamps? (I expect you will say your own :-))

    Here is the board they will be tried out in:


  8. #18
    Join Date: Dec 2015

    Location: Central

    Posts: 14
    I'm Charles.

    Default

    Quote Originally Posted by Starterman View Post
    OK Thanks!
    Do you have any recommendations for the best regs to power your VSamps? (I expect you will say your own :-))
    Our op-amp can be powered by any regulated power supply. Of course the more well built and well designed power supply the better the overall audio performance.

  9. #19
    Join Date: May 2008

    Location: Surrey

    Posts: 5,885
    I'm Rob.

    Default

    Is this still happening? If so I will take some pics.
    Buy Bose...And get your parking validated!.

  10. #20
    Join Date: Jan 2015

    Location: Leeds

    Posts: 141
    I'm Dave.

    Default

    Not sure if we showed enough interest.

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