In reply to:

Its my understanding that the 4 ohm switch limits the amount of power the reciever can put out.


That could be. OTOH, no matter what I'm listening to/watching, the 4ES has power to spare. Typical volume settings are:

HT -30dB
CD -52dB
Tuner -56dB

Considering that I have two 4 ohm towers, the center and the 2 surrounds are 6 ohm, and I have two 8 ohm rear speakers and 2 subs, the receiver is doing a great job!

- Bill