I use to own a Marantz SR-5200 amp and no matter how long it was on for, it would stay relatively warm at most even after being on for over 6 hours! With my new AVR-3802 however, I have noticed straight away that this amp tends to heat up rather more quicky than the SR-5200. I was very supprised by this especially when Denon advertised the 3802 as having huge transformers which deliver equal power to 7 channels. Have any of the 3802 owners noticed this besides me? BTW I'm currently only using a 5.1 setup and under 'power management' I have chosen 'multi-surround' as opposed to 'surround-back' and under 'speaker configurations' I have set the surround channel 'B' to 'none'.