Thanks for the welcome. I've been a musicain for 30 years, playing Marshall 1/2 stacks on stage, so if i'm not deaf yet, probably will not happen..LOL
The Onkyo M-504 is a high current dual mono block that puts out about 170wtts per at 8 ohms..at 4, more like 250. Never had a problem driving any speaker before. Are the M80's power hogs?