I've used 2 Pioneer Elites and 1 Denon Receiver. My personal preference is Pioneer for the M22. More bass, fuller sound. I tweaked the Denon as much as I could, but it's tweaking ability was limited. Sadly had to retire it, and go back to Pioneer. Glad I did. Denon did too much bass suppression for my taste. YMMV.

Also, now that I remember, Denon also caused some brightness that was unpleasant to my ears that went away after switching back to the Pioneer. You can blame this on room response if you want, but you won't convince me based on experience. Others noticed the harshness also.

I attribute the difference to MCCAC vs Audyssey and how it works with the M22 speakers.

Last edited by CatBrat; 02/23/15 04:16 PM.