@tomaswv yeah that’s what was frustrating me because I’m using balanced interconnects too and figured that was the first place to look. I will say they’re very quiet now and super happy with them.
@tomaswv funny thing, I liked everything about the Bel Cantos right away - they felt revealing and detailed. AND I heard an annoying hum. Totally vexing, I went through some methodical troubleshooting without tracking it down. That’s when I got the Audioquest power cables - they are heftier than I thought they’d be and I think well-insulated. Figured the hum could maybe be cominv from poorly insulated stock cables. Nope! Hum was STILL there. Finally figured out it was the antennae on the Cambridge streamer that the amps were interacting with. I didn’t think of it because I use a hard wired network connection and wasn’t using Bluetooth or wi-fi, so I didn’t think it was “active.” Anyway, I still like the amps. Happy with the power cords - why downgrade just because they had nothing to do with anything? :)