[frisqo]

Originally Posted by meltemi

A fully balanced preamp or power amp consists of two identical amplifier units (and for the preamp also volume control units) per channel.
Normally the units are floating as well, i.e. independent of the ground potential.

In a top of the line Accuphase system, the fully balanced output of the source (DA / Phono pre) is connected via XLR to the fully balanced C-3850 and then via XLR to the fully balanced monoblocks
(A-200, A-250, M-6200). At the output of the power amps the phase of one complete amplifier chain per channel (preamp, connections and power amp) is turned 180°.

This eliminates all potentially induced noise and also the common residual noise and distortion of the amplifier and volume control units themselves leading to a cleaner music signal.

thanks :th umbsup: