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Chord Electronics Qutest DAC - Official Thread

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  1. kumar402
    I guess it all depends on the streamer or source. I think these connection will make minimal impact. I don't see perceiving any difference between optical and BNC as long as source hasn't prioritized one over another.
     
  2. hikaru12
    Thanks for the info - only reason I ask is optical has high jitter but isolation from electrical noise and Ive found optical to be subpar on other DACs compared to a direct electrical connection like coax or BNC/AES.
     
    Baten likes this.
  3. kumar402
    Right now I'm using optical but I have invested in Digione signature player and hence will move to BNC. I see you have Gumby and I guess Schiit are proponent of BNC/COAX connection so that's your way forward.

    Also I feel BNC implementation in Chord product to be as good as any since that's how their MSCALER connect to their DAC
     
    Last edited: May 3, 2019
    Baten likes this.
  4. Baten
    coax 4 lyfe
     
  5. x RELIC x Contributor
    To paraphrase the designer, you’d have to transmit the signal down a wet string for jitter to become an issue with Chord DACs. He’s shown that jitter is not an issue at all in his Pulse Array designs.

    Optical is the reference.
     
    HumanMedia and Gibson59 like this.
  6. Deftone
    Wet string lol i like that.
     
    x RELIC x likes this.
  7. Ragnar-BY
    Got my Allo USBridge yesterday. I thought that my MacBook Pro have a good USB output, but USBridge outperformed it in every way. I was surprised how big could be an improvement from digital transport upgrade.
     
  8. kumar402
    I am waiting for digione signature player as well. Currently I’m using optical out from my 2013Macbook pro. I hope to hear similar improvement.
     
    Ragnar-BY likes this.
  9. miketlse
    Are you using one or two power supplies for the USBridge?
     
  10. Ragnar-BY
    Two. For clean side I use Apple iPhone charger. Apple PSUs produce less noise than cheaper generic switchers and it`s clearly better than powering USBridge from one stock PSU. I have not bought "audiophile LPSU" yet, but it would be interesting to try one.
     
  11. miketlse
    I wondered, because there are webpages recommending what you have done, with a low noise PSU for the usb bridge circuits.
     
  12. Ragnar-BY
    A lot of people are using PSU`s that are more expensive than the USBridge itself. I think I will try a battery pack to see if cleaner power would bring any further improvements to my setup.

    Anyway, even with two switching PSUs USBridge sounds great, so for now I`m happy as it is.
     
  13. alphaman
    Qualcomm just recently made DDFA avail. on a single chip:
    https://www.audioxpress.com/news/ne...-superior-audio-in-smaller-low-power-speakers

    Mr. Watts:

    is your "DDFA" technology similar to the "direct-digital" technology Sharp Electronics created in the 1990s for their high-end amps?


    https://www.stereophile.com/integratedamps/253/index.html
     
  14. Rob Watts
    No that used 1 bit PDM or 64FS DSD. And the measurements indicate no feedback; DDFA is high resolution and incorporates high order feedback and is capable of very low levels of THD and N.
     
    Chord Electronics Stay updated on Chord Electronics at their sponsor page on Head-Fi.
     
    https://www.facebook.com/chordelectronics https://twitter.com/chordaudio http://www.chordelectronics.co.uk/
  15. genotabby
    Hi I am experiencing some popping sound regularly through the supplied usb. How did you figure it was the optical cable and not the interconnect?
     
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