Originally Posted By: pmbuko
Keep in mind that the Pin portion of an amplifier's efficiency calculation -- a ratio of Pout/Pin -- is measured after the electricity from the wall has passed through the amp's power supply, where some loss inevitably occurs.

i know only that on the Internet, i've read a few times that my amp's efficiency is around 70%.
See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery