In a multichannel amplifier, power supply will fell into one of three types. In order rising costs, and expected decreases the interaction between the channels, namely:
1. Transformer, rectifiers, and reservoir capacitors are shared between channels.
2. Each channel has its own transformer secondary, rectifiers, and reservoirs. There is one
transformer core and primary, but only together.
3. Each channel has its own transformer, rectifiers, and reservoirs. Nothing except perhaps that electricity and electrical switch split.