Ayre QB9 Dac . Upgrade to the new QB20. Vs competition In the $4-5k range or less

@jjss49 .
Yup, only USB.
I should ask them why they didn't include optical.
The small size of the Codex makes it a challenge to plug in multiple cords, especially when AQ makes the hardware so big.
Bob

I got to hear at our audio jumble 
the Ayre QB20 
and the Schiit Yggsdrasil analog2,gen5 with New proprietary unison Usb board , both had the latest Synergistic orange fuse
i heard the The New usb Board 
windows 20 a must, mac, or lynix
is. Fine . Noticably cleaner much better then Xmos which does other all in ones. Both dacs were on for 5-6 days straight both were excellent , I thought the latest Ygg
a bit more natural and fleshed out 
the Ayre had slightly fuller midbass 

@audioman58 ,
I think you are referring to the QB9 with Twenty upgrade.
And, I think you meant Windows 10?
Correct?
Thanks for the review of the shootout.
I have deep respect for Schiit and their products, and am a bit surprised the upgraded QB-9 is still very close to the upgraded Yggy.
I found the Yggy very close to the Codex.
Bob

I have not heard the AyreCodex 

@audioman58 

Thinking putting an Orange SR fuse in my Yggy.  What value and size fuse did you install?