That AVA 120 is a great amp. It would compete with amps much higher in cost. I preferred it to the Pass Labs XA25 in my system. Something to be said about a amp from a very experience designer who knows how work with few parts.
The Gustard does not appear to need any USB power. I have the power turned off on the Matrix card. If someone would like to correct me on that choice, I welcome feedback.
Nice system, very well thought out and arranged. Questions for you: are you using an external power supply for the Element H card? If so, what power supply? Thanks.
