I've used this receiver for about 7 months now. Sonically, it just keeps getting better (as do my MMGs). The digital (Class D) amp started out bright with a hard digital edge. The brightness issue is no longer an issue at all. This is the most detailed amp I've heard yet. It's dead quiet too. The sound, especially delicate percussion, seems to come out of the black which gives it "contrast". The bass has some punch and is tight.
This receiver was supposed to be a temporary solution until I came to a decision on a higher-end 2 channel amp and preamp. I no longer have any incentive to "upgrade" though. The sound is that good. In fact, I like having a ton of features packed into one small unit.
The speaker connections are plastic POS junk. They kept popping off until I figured out how to squeeze them just right to secure the speaker pin connectors. The wiring is a crowded hairball with everything connected. The digital menu is confusing at first and the manual is just plain inadequate.
Setting everything up, making the connections, getting everything to work and using the digital menu to configure it all was a 4-6 hour job for me.
The unit itself is low-profile and light as a feather. It’s a massed produced consumer product. You can pick it up with 2 fingers! It almost looks like a clock radio! But it's Panasonic’s refinement of the original class "D" amp design and the TI chip, along with all-digital inputs that make the amp sound so incredibly GOOD. That's a VERY bizarre combination, cheap construction with high performance.