Originally Posted By: JohnK
An amplifier basically is a power supply section connected to one or more channels of output transistors, which serve as valves to add the required amount of voltage gain(typically about 29db, about a 30-fold increase)from the power supply. The receivers which have a supposed "biamping" feature(among them most or all of the present Denons), apparently as an advertising gimmick, have only one amplifier(one power supply feeding up to seven output channels)and can't "biamplify".


Thought that was how these things worked.....