At the present time I am driving my m80's with a HK3470 reciever rated at 100 watts per channel at 8 ohms(probably higher at 4 ohms).Amazon is selling the HK3480 rated at 120 watts per channel at 8 ohms for only $259 with free shipping.Yep , couldn't resist and ordered it.I'm just wondering whether there will be any difference in sound due to the higher headroom? This is a tough one to sneak into the house considering that I bought the the 3470 less then a year ago.I'm really ging to have to come with a good story to get it past my wife.