This is a timely thread...
I'm shopping for a new AVR and the 876 has appeared on my radar. Really good to hear of at least one person running their M80's with it without incident.
Looks like a fantastic receiver. The specs are amazing.
For those with the 875/876, have you been happy with it? The "Official" TX-SR876 thread over on AVS has me given me slightly cold feet over it, as there seem to be a fair number of 'quirky' complaints.
Peter, I followed the 875 AVS thread from start to finish and inspite of all the negative comments (there were also many positive ones), I never had any issues with the 875 - no overheating or anything. I sold my 875 and bought the 876 because it had Audyssey dynamic EQ in addition to the MultEQ on the 875 and that feature alone was worth the upgrade for me. Other improvements have made the 876 a little better than the 875 but they are essentially the same unit.