I feel your pain. Got mine about 3 weeks ago from Amazon. Was enjoying it all through last night. Last night I noticed that when the receiver was muted that there was static coming through the left speaker. Changing inputs did not make a difference. Switching the left and right speakers only made it come out of the right speaker. So something was up with the left speaker terminals (or something worse). I also noticed that when playing through airplay, when I adjusted the volume on the receiver, the volume would just snap back to where it was before I adjusted it. Ok. Little weird.
Tonight when I get home from work, I put it on, and I get "amp error" on the panel. Then it shuts off and the MCACC light is blinking and I cannot power it back on. Disconnect everything and put it on my dining room table (with nothing connected to it), plug it in and same thing. MCACC light blinking and cannot power it on. Good thing Amazon has a great return policy. So I have a new one coming.
I have to say that I really wanted to love this receiver. I was so excited to be getting it and when it finally came, I sort of just "liked" it. The sound was great to me. I am no audiophile but I expected much more from the remote control which is a train wreck. The instructions are absolutely horrible. The user interface on the screen is horrific. The feature set is great and I appreciate all of the possible settings, but really do I need them all? Sometimes less is more in my opinion. For example, you go through the MCACC setup and it decides that my little speakers are large speakers which disables the subwoofer except for the LFE channel. Then it takes me 2 hours to figure out why my subwoofer is not working. The HDMI standby pass through is a joke. OK so it does indeed work with my Sony Bluray, but not my TIVO or Apple TV. Maybe because these devices do not have a power switch, maybe because they do not support HDMI control, maybe because they are not in the correct input? Who knows as the user manual hardly mentions this very important feature. I would assume that there would be some sort of logical setup where you would pick the input that you want to pass through full time and that would be it. I would obviously choose my TIVO over my Blueray player since I do not care to watch "The Biggest Loser" or shows like that through my receiver. My TV speakers are fine for that.
On a positive note, Airplay is great, Movies and Music sound really good to me, the ipad and iphone apps are cool but lacking basic channel level control which would be key for me.
So after all of my whining and ranting, at the end of the day, I am choosing to replace my 1021-k with another 1021-k as the positives out-weigh the negatives for me.
I just hope I do not regret it or ever have to deal with Pioneer tech support. We all know how that would go. They would probably blame my speakers or my components.
Will let you all know how it goes.