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  1. P

    EVS modified Gustard X20/Gustard X20 thread

    Sounds like you didn't select DSD output in your audio player software.
  2. P

    EVS modified Gustard X20/Gustard X20 thread

    Sure you can: just push and release the volume button to change input. Press and hold if you want to get to the additional settings. Press and hold again to exit settings.
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    EVS modified Gustard X20/Gustard X20 thread

    You should be getting a lock. A few things to check: 1. Are you sending audio from your PC? Is it PCM or DSD? How are you sending it? What are the audio settings in your software? Does it work if you use another output from SU-1 into X20pro? 2. Did you install SU-1 driver on your PC and is the...
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    Who's buying the UpTone Audio ISO REGEN?

    Interesting, Amir. So do you think that it's the isolation and not regeneration that might help Shiit Modi 2? If yes, then perhaps an optical isolator or extender device might do the same thing. Or perhaps even a USB-to-ethernet extender? I see a bunch of these for well under $100. I'd certainly...
  5. P

    USB to AES or SPDIF converter that passes native rate fed to it

    For another USB to SPDIF/AES/EBU device you may want to consider Singxer SU-1. Very well made, works up to 384K PCM and up to quad DSD when used with a DAC that supports it. SU-1 also just passes the input rate to the output, but unlike Mutec, it does not convert from DSD to PCM. This unit is...
  6. P

    Who's buying the UpTone Audio ISO REGEN?

    Maybe they just want to send it to you for free? ;)
  7. P

    USB to AES or SPDIF converter that passes native rate fed to it

    Mutec 3+ USB will output at the PCM rate you feed into it. It automatically detects and re-clocks the signal to the input rate, up to 192K. It does not do rate conversions. It will also convert DSD input to PCM, that output will be at a selected rate.
  8. P

    Who's buying the UpTone Audio ISO REGEN?

    OK, now we are really going off the deep end. I'm out of this discussion until there's something substantive being shared related to ISO Regen.
  9. P

    Who's buying the UpTone Audio ISO REGEN?

    Please explain how you think that jitter spectrum might change at the output of a DAC when switching Regen in and out of the circuit, and how this change is caused primarily by the DAC and not by Regen. So your whole argument is based on a conjecture that you can't prove? Jitter is the primary...
  10. P

    Who's buying the UpTone Audio ISO REGEN?

    What you are missing is that I am simply asking for jitter measurement of ISO Regen. That's all I came here to do, not to argue about what might or might not be measurable. John Swenson stated that there are three main issues he attempted to address with ISO Regen: John believes, as I do...
  11. P

    Who's buying the UpTone Audio ISO REGEN?

    Ah, but you are switching context on me. We were talking about the eye pattern posted by Uptone. We agreed that the eye pattern is not an illustration of common mode noise rejection. My point was that this leaves jitter reduction as the only possible reason to show such a measurement, as that is...
  12. P

    Who's buying the UpTone Audio ISO REGEN?

    I'm glad we reaching some common ground :) Very simply there is no effect, other than jitter, that digital data transmission errors, noise or distortion can have on analog output if the bits are not flipped. Jitter is it.
  13. P

    Who's buying the UpTone Audio ISO REGEN?

    So you argue that my request for jitter measurements cannot be taken seriously, because leakage currents are the main issue that ISO Regen is trying to solve. I'm OK with this. Then why publish a diagram showing improved edge timing that says nothing about leakage currents and everything about...
  14. P

    Who's buying the UpTone Audio ISO REGEN?

    So, the eye plot published by Uptone Audio is supposed to illustrate what? ISO Regen breaking up leakage currents? Looks to me more like USB signal regeneration. That's exactly why I'd like to see more measurements. I want to understand what this gadget does and how it does it.
  15. P

    Who's buying the UpTone Audio ISO REGEN?

    Leakage currents can be of any frequency generated by any device that's connected either directly (e.g., through USB cable) or indirectly (coupled through the ground plane or the mains). There is no hum at all in my system. Checked by ear next to the speaker and by FFT at the output of the DAC...
  16. P

    Who's buying the UpTone Audio ISO REGEN?

    All audible frequencies, of course. I have measurements at the output of my DAC up to 22KHz. No spurious frequencies from mains or other sources that rise above -120db. Now what?
  17. P

    Who's buying the UpTone Audio ISO REGEN?

    Do you have a way to measure these?
  18. P

    Who's buying the UpTone Audio ISO REGEN?

    Assume galvanic isolation on USB and Uptone LPS-1 as the power source.
  19. P

    Who's buying the UpTone Audio ISO REGEN?

    Give me an example of a non-jitter-related effect ISO Regen can have at the output of a DAC where leakage currents are not an issue between digital and analog and no bits are damaged in transit.
  20. P

    Who's buying the UpTone Audio ISO REGEN?

    I'm not sure why this is such a difficult concept. If ISO Regen does anything in a system where bits are not mangled, it has an effect on jitter. This effect can be measured with ANY quality DAC by comparing jitter with and without ISO Regen. But I already said this at least a few times.
  21. P

    Who's buying the UpTone Audio ISO REGEN?

    I realize no such thing :) The question was posted on the CA forum already, where it was not met with a flurry of personal attacks. I posted the request here, in the hopes that Uptone Audio is paying attention and to elevate the original request above the noise. Not sure that was such a good...
  22. P

    Who's buying the UpTone Audio ISO REGEN?

    Of course it would be better with my DAC(s) but with any DAC, a before and after plot would be great. In fact, I'd welcome it if they would pick the worst performing DAC to illustrate the effect (or the best, whichever better demonstrates what ISO Regen does).
  23. P

    Who's buying the UpTone Audio ISO REGEN?

    Sorry, I didn't realize this was a private forum for fighting with Amir. My apologies.
  24. P

    Who's buying the UpTone Audio ISO REGEN?

    I assume Uptone Audio has access to DACs and can run tests with and without ISO Regen in the circuit. A test with a few common DACs would be nice, but even one would be better than none.
  25. P

    Who's buying the UpTone Audio ISO REGEN?

    Yes, that's the problem. How does the induced noise, leakage currents, signal filtering by the digital cables and connectors, etc., manifest itself at the analog output? I have a good galvanic isolation between PC and DAC, and I know the bits are not being mangled by the transmission. Then what...
  26. P

    Who's buying the UpTone Audio ISO REGEN?

    Very simple. Asking the vendor for measurements, hoping that the original request Amir made does not get completely drowned out by noise.
  27. P

    Who's buying the UpTone Audio ISO REGEN?

    Ah, but I did. You just didn't read it. I don't need to convince anyone but Uptone Audio. And I have a simple way to do it. It's called money, and it can be very persuasive.
  28. P

    Who's buying the UpTone Audio ISO REGEN?

    And this is where I'll remind you that I'm not here to hear your opinion of which measurement is important to you. This one is important to me, and I expect, to at least one or two other individuals.
  29. P

    Who's buying the UpTone Audio ISO REGEN?

    Well, no. The claim on Uptone website is that ISO Regen will deliver "dramatic musical benefits". I don't see that in an improved eye pattern. Do you?
  30. P

    Who's buying the UpTone Audio ISO REGEN?

    Jitter spectrum at the output of the DAC.

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