It’s funny, I don’t find the power bill to be that prohibitive. Maybe the amp adds $20-40 a month, I’m not sure. My electricity bills are around $175-200 a month. I also charge my Tesla at home so I don’t know how much it costs to keep that charged up to 75%. I don’t drive much, though, and I certainly don’t run the Colosseum 24x7, lol.
At the moment, I am sad, as my beloved amp has a crackle in one channel so I have to arrange for a way to ship the 175lb monster to a repair center.
Look at Gryphon’s Apex There is always a sky above a sky, as they say.