The 1075 is the 5x120 wpc amp. The 1075 will be very capable of driving the 4 ohm M80 speakers with no problem.
*But*
If you'll be running a 7.1 system I'd almost forgo the 1075 and opt for a 2 ch 200 wpc (300 @ 4 ohms) 1080 to run the M80 mains and use the 120 wpc(?) Yamaha receiver to drive the surrounds. That would make a killer system! *But*, that's me!
I was thinking Spiff had a Rotel receiver? I'm almost sure Thyname does. I'm not familiar with the 1066, it must be the predecessor to the 1068?
