For reasons connected with this particular Pi having another job to do as well (and a hat to help with that) I need to use a USB DAC. I also need the Pi to be in one place, and the amp in another, about 2.5m away. Cables between the two will have to pass near to ethernet cables and power cables, monitors and speakers, and potentially a wifi access point (yeah, it’s a crowded office).
Would I be better off placing the DAC near the Pi, with a short USB cable and a long audio cable. Or placing the DAC near the amp, with long USB run, and a short audio cable? The audio will be 3.5mm to RCA, because the DAC I have is a Cyrus Soundkey.