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Chord Electronics Qutest DAC - Official Thread

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  1. Baten
    Why not just use qutest and digital volume control? Since qutest has such low impedance it will work. Adding SYS will only degrade things!
    linearly likes this.
  2. kerisabe
    Does anyone knows if there is an actual USB A plug that is pure silver? Im looking to replace the plugs/connectors for my active grounding cables and the cables itself to pure silver conductors. Any suggestions would be appreciated. (Found bnc/spades/stereo jack that are pure silver; except usb A plug)
    Last edited: Sep 2, 2019
  3. blueninjasix
    I mainly use Qutest with my set amps and speakers but for occasional headphone listening I've recently acquired a Liquid Spark which is a cheap as chips addition and can easily drive HD650. I user Beyerdynamic dt 880.
    linearly likes this.
  4. linearly
    After thinking about all the positives and negatives between Qutest direct headphones and Hugo 2 I decided to go with the latter (again). I'm sure Qutest would work with rca direct to my 300ohm phones, but what would happen if in the future I want an upgrade to lower impedance ones? Too many complications. And maybe there are sound downsides aswell. Who knows.

    So I went to audition to Hugo 2 and see if it still sounds as I remember it from a year ago. Next to it there was the TT2 so naturally I had to listen to it and see what the hype is about. Hugo 2 was exactly as I remember it, no surprise there. The awe struck when I started listening to the TT2. I was expecting slighty better then Hugo 2 performance, to hear differences only with some songs not all etc. But the bump in audio quality from Hugo 2 is obvious right away, much closer to DAVE then the other way around. The sound has weight to it, it flows better, also warmer but not muddier, it sounds amazing. I'm very glad I gave TT2 a listen as it made the decision for me so much easier. Harder for my wallet, but easier for me.
    blueninjasix likes this.
  5. Qute Beats
    You bought the TT2? Congrats! I moved from Qutest to TT2 after a demo too, was very happy with Qutest but after the TT2 experience just had to get one, wallet be damned..
    linearly likes this.
  6. linearly
    Thank you. Didn't get it yet but hopefully soon. After owning DAVE I knew it was very hard to get a replacement thats why I wanted a Qutest until I got the funds for another DAVE. Did not expect TT2 to be this close to DAVE, of course DAVE scales exceptionally well with high end gear, and thats the way I felt when I owned it. DAVE needs a good power cable, expensive speakers/amps/headphones to make it shine. Now with my HD650's the difference between TT2 and DAVE should be much smaller. Also with the TT2 you have the peace of mind that you can try any headphone you want and not have to worry about driving them, so future proof too. Qutest, while I owned it was great too, but my amp didn't do it justice, so with the price of a good hp amp and great interconnects you get very close to the TT2. I'm very glad I gave TT2 a listen before deciding and I think on the long run I saved money that I would've spent on different hp amps until I found one that I like.
    Qute Beats likes this.
  7. hasos
    Has anyone compared Chord Qutest + Usbridge (or other streamer) vs Lumin D2 (with internal dac) SQ? I will be grateful for the opinion.
    Last edited: Sep 19, 2019
  8. dinus777
    Adding to that, i'm also interested if anyone have ALLO DigiOne Signature + Chord Qutest ?
    I've read a lot very possitive reviews about it.
    Thanks in advance !
  9. miketlse
    There are a few posts on the chord threads from owners happily using usbridge or digione. The disagreements seem to be more about whether to use usb or optical, and that defines which of those two pieces of kit to use.
  10. kumar402
    I used this combo when I had Qutest. Digione in general is a very good streamer. Easily integrate with Roon, provides airplay.
    However you have to use LIFEPO4 batteries or LPS for powering the clean side. Digione provides weight and heft to sound, removes digital glares and BNC connector works like charm.
    Do also take a look at PI2AES, It has all the output you will ever need - AES, I2S, Opical, BNC, RCA Coax
    Baten likes this.
  11. jeremya
    @Rob Watts How much current (peak? constantly?) does Qutest draw from the signal side?

    I was experimenting with a USB configuration that allows me to defeat the VBUS pathway and I noticed that when VBUS is eliminated, the Qutest disappears from Roon (even mid-playback). Re-connecting VBUS causes it to re-appear a few seconds later. So, I figure it's doing the standard USB device thing and using VBUS for detecting the presence of an upstream device.

    I would suppose that the majority of the power for Qutest is provided via the 5V 1A micro-USB power cable connection... but knowing how much current the signal cable must also supply would enable some interesting experimentation with alternate supplies and sources.

    Thanks in advance!

    p.s. Apologies if this has been covered elsewhere (my search-fu failed me!).
  12. miketlse
  13. jeremya
    Thanks, @miketlse! Relevant bit:
    I recall reading that post once upon a time, and reading it again fills in my mental model of how Qutest is built (now that I've spent quality time with one). Thanks!

    However, my original question remains unanswered. I'm hoping Rob will get 'round to it eventually :k701smile::

  14. miketlse
    The USB decoder normally uses a few mW in the other Chord dacs, which would need only a few mA at 5V.
    Still if you need a more precise answer, you will have to wait for Rob.
    jeremya likes this.
  15. Rob Watts
    The USB decoder and isolation circuitry consumes about 0.3 W, so you are looking at 60 mA of current drawn on VBUS.
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    jeremya and Baten like this.
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