Usb off the pi4 works really well. Why not try it and add a hat if you feel the need?I'm researching a Pi-based Roon endpoint for a Bifrost Multibit/Valhalla 2 headphone stack. I am assuming the use of a HAT to improve the quality of the signal. While I am aware of units like the Allo Digione Signature that should give out a clean SPDIF signal, I also realize that I could upgrade the Bifrost with a Unison board and get as good if not better quality of input signal handling via USB--thing is, do I still need a HAT to isolate a clean USB signal from the inherently noisy Pi board? If so, any recommendations?
(usb off pi3 is poo)