Thanks for all the input. By reading the owner's manual, I was able to find that there is an impedance switch on the back of the receiver - and by switching it to the setting suggested for 6 ohm or lower speakers I can play the receiver for many hours at reasonably loud volume (-5) in all speakers. I haven't had a chance to get into the cabinet and put the receiver on top of the CD player, but I have checked the receiver and it never really feels warm, let alone hot. I think I'll take what I've got and run with it - although I have one more question for the helpful folks here:
If I change to my 1990 Denon DRA 325 50 Watt stereo receiver, I will not have the option of connecting the CD player via the optical audio (toslink? - someone help me with the terminology here) connection. How important is this?
