Ive been looking at some cheap amps (namely the FiiO A3) and i was wondering if any harm could come from using them constantly plugged in. Does anyone else use a portable amp in their stationary setup? Im planning on using it with sennheiser hd650s, the calculator at headphonesty said this would be enough at 110db, i probably won't listen to it that loud anyways. I kinda blew my budget on the headphones and im looking for a sub 75$ amp, cheaper is of course better.
