Honestly I was surprised it did as well as it does, too. It actually powers three of them across the front, the fourth is placed center back and run off a separate amp. It does some amp module switching/bridging/bi-amping depending on the playback mode which helps- in 2ch stereo it actually uses six of the 100wpc nominal modules, bridging two modules to each woofer cab and routing the third separately to the mid/highs. Now I don't pretend that it can actually output 600W continuous from the small stock power supply it has, but it goes as loud as I care to take it with decent authority. In multichannel mode it uses one module per speaker channel but the overall efficiency goes up since there is then 8 separate speakers helping to achieve the same SPL (two surrounds each side, parallel wired off one module, plus the extra 802 on it's own amp at center back). They could certainly handle more power, it doesn't have the same authoritative bass slam as when a friend of mine was running one of these pairs off two Bryston 4Bs. I'd like to throw some bigger amperage at them to see how much difference it makes here, but I'd have to rework the surround setup and haven't been motivated or deep pocketed enough to do it. Basically it totally satisfies me so until this little Panny eventually dies, so I'll probably just leave it till then. Plus the smaller amperage has probably saved me more than a few times when unforeseen recording glitches have bottomed out the woofers with it cranked. The 802's I have are the pre-Nautilus mid-90's era Matrix 3's, no sub.