Quote Originally Posted by DarrenHW View Post
As it seems you're using Volumio on a 3B+, it's worth looking into underclocking IMHO.

Nowhere near as difficult as it sounds, some useful info here http://theaudiostandard.net/thread/4...r-pi-allegedly. Certainly less time consuming than comparing storage media and I possibly more audible?
Interesting tweak ... and love this comment from the author of the mod under discussion - sums it up perfectly IMV

http://archimago.blogspot.com/2017/0...-3-as-usb.html

QUOTE:
"A. General Impressions
The Raspberry Pi 3 playing to the USB DAC is indeed "clean"; as in just as noise-free and "bit-perfect" as other computer-based servers sending to a good asynchronous DAC (no surprise and further discussed here last summer).
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May I also remind everyone that this is all with an inexpensive switching power supply... No noise of significance even with the 192kHz test beyond the audible spectrum. I think it would be nice if the believers in linear power supplies can show some evidence that noise can be significantly improved at the DAC output since the cost of linear power supplies can be many times that of a Pi 3!"

(emphasis added)