Anyone using this amp for powering compression drivers in an active crossover system for home use? I was wondering if it is very quiet as far as hiss, quiet as far as transformer hum as in standing next to the amp with no music playing, and if it sounds good at these typically fractional watt levels. There doesn't seem to be many smaller amps with balanced inputs and gain controls. The 2B-LP comes to mind, but run so hot. Thanks.