Good point @arcticdeth Yes. I have Krell KRS200 references from late 80s, upgraded to 400w per side. They can draw up to 2kW a side. Watch the house lights dim when they power up. No arctic deth in my listening room!
I run each off a separate circuit. I also run three more circuits for TT, pre-amp and phono amp. CD player and SACD player, have their own circuit - don't want those ugly digits escaping anywhere.