does amp draw alot of power when volume is zero

Thanks for all the suggestions. Mine is a class D bel canto, fairly cool at idle, just a couple of warm spots but certainly not hot.

With a Class D amp; the output devices are turned off(no bias), until a signal is detected= high efficiency/low temps/low current draw at idle. Class A has full bias applied to outputs, ALL the time= low efficiency/lots of heat/high current draw at idle.

Agree with Magfan on the Kill A Watt; it has many other uses apart from audio.

Purchased mine at Radio Shack.

Tswei,
Bel Canto uses B&O ICE modules. I don't know how many changes / upgrades are made.
However, the B&O data sheet says efficiency is in the 80%s at full power. Lower efficiency at lower powers. This is 'plug to speaker'
My ASP moduled PSAudio is cool even at high powers....but if I close the cabinet, it CAN get warm, even at the few paltry watts I draw under normal conditions.

Bel Canto publishes the idle power draw in the owners manual, as do many other manufacturers. Their current integrated (s300i) idles at 15 watts. I would leave it on 24/7.