Let me start off by saying that I absolutely love my new Monitor 60's and my PSW10...Right now, I have my Polk's hooked to my Pioneer VSX-406 receiver on A channel. B channel goes to a 4 way Radio Shack switch to where I have the old Advent's to B, the bookshelf Sony's to A and Best Buy's rock speakers to C ( The radio shack manual is attached and the selector has A,B,C and D). With the Polk's hooked up, I can no longer hit speakers A and B on the receiver as the Polk's become muffled. I only tried it once and briefly and at low volume. I would imagine that the Pioneer is not powerful enough to power all as before. I don't have the Pioneer manual online, but it's specs are 80W + 80W Front, 80W Center, 80W rear. ( I do have the book and can scan anything if you need me to ). Right now, I just have sub hooked to sub out and Polks to A, and Radio Shack switch to B. I have also attached the Sony manual, which is currently my home theatre receiver with stock 6 ohm Sony speakers. I was curious, is there a way I can bi-amp on either of these receivers ? Which would be my best setup for enjoying my Polk's even more ? I had thought of bringing in the Polk's to the home theatre, and was wanting to bi-amp, but didn't want to damage anything and need to ask you first. I appreciate any help you can give. Thank you.