My GUESS is yes. The Elite line is more robust, but it's not seperates. There are many people here though who run their M80s out of receivers where the manufacturer states nothing of 4 ohm loads. Though, especially pushing 7 channels, you run the risk of running your amp hot. So make sure it's plenty ventilated.
I believe we recently had a thread regarding this very same topic (different receiver). The general concencus for that was that you can play M80s, but M60s are easier on your amps. If you can swing it, moneywise, my suggestion is always to use an external amp for the M80s. Your Pioneer Elite VSX-54TX has preouts. And if you REALLY want to make these puppies sing, buy 2 2-channel amps and biamp your fronts and quickly become the envy of your friends
