Changes in DAC Presentation - Need Advice

op

if you haven't already you should contact alvin at vinshine for warranty support immediately - needless to say, what you are describing should not happening

take the time to email him with a precise description of the issue, serial # of the unit etc etc

denafrips gives a ship-back-to-china-at-their-cost warranty period

I believe that you have a problem on the dac.   Breakin  is questionable at best and no major swings in audio should occur.  I use a Microsoft surface as a roon source, ultra rendu via usb to an audio gd r7 and the sq has been incredible and consistent since arrival

+1 @tennisdoc56  - break-in can offer long-term gradual improvements to many components but to swing SQ mid-song by such a noticeable level sounds like a major fault.  

😉