I could tell a world of difference in sound between the only 2 receivers I've ever used. Both in 2 channel stereo mode.

1) Sony STR-DH500 $160
2) Pioneer VSX-21TXH. $630

Edit: The Sony just had a lot less power and couldn't drive the speakers nearly as good as the Pioneer can. After swapping receivers, I could hear a lot more bass coming from the M22's.

Last edited by CatBrat; 01/29/10 07:17 PM.