Do they benefit from power conditioners and power cords?
Its able to reject a fair amount of AC power line problems. A nice power cord if helpful if you push the amp hard. Its only going to draw serious power when its making power (true of all class D amps)- that's where a nice power cord will help. We've got no feedback on the use of power cords with the amp at this point, AFAIK everyone is using the stock cord.
I love my GaN amp, which is on 24/7 as is the rest of my system, but when not played > 12 hours, it sounds edgy/hard/glass-like. It takes a good 30 minutes of play time to smooth out.
Interesting. We don't seem to experience that, nor has it been reported. My personal experience is the amp sounds right as soon as its turned on.