I am powering these M60s using zone 2 from a Denon AVR-789. I don't typically listen to music in high volume. I think the Denon has ample power for my need. However, those signals do have to travel from one end of the house to the other on a 14 gauge wire across 2 sets of binding posts.

In my big room, the speakers actually sound better in moderate volume than high volume since I am losing bass like crazy.

Thanks