We have made a move forward. I managed to have a chat with Andrew, that led to another chat with Sonic Frontiers who makes made my amp. The conclusion was that I was using RCA cables and the DSP's floating ground that makes it more compatible with most amps, made it not so friendly with mine.

So the going conclusion was that when I asked here if I should go with XLR vs RCA cables, the correct answer for me was XLR. I borrowed a neighbours pair, and you can hook them up with ZERO noise from the amp and speakers with the DSP turned off and plugged in. Where before I got a pretty loud hum.

But as soon as you turn on the DSP, I have gone from a humm now to a hiss. New sound.


Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5