Celtic66, most who know would agree that the Pioneer VSX-49TX is a better receiver than just about any on the market these days. Just take a look at it's review in Stereophile's Guide to Home Theater for confirmation of this. Comparing it unfavorably to any Yamaha, even the RX-Z1 is ludacrous. That aside, the Pioneer is capable of using it's rear surround channels to bi-amp speakers. You wouldn't get the 7.1 channel surround with this setup, but I believe it would be sufficient to power the Revel F30's, even with their 89 DB sens. I haven't confirmed this, but do bi-amp my Klipsch Legend KLF-30's with fantastic results (yes I know they have a much higher sensitivity).
Ceme, yes, of course a seperate amp will sound better, but I would imagine you'd get good results if your system allows you to bi-amp channels.
Ceme, yes, of course a seperate amp will sound better, but I would imagine you'd get good results if your system allows you to bi-amp channels.