Thanks for the quick response. I ran the controls and it seems to help. They generally aren't very 'crackly', but notably when I watched an episode of Game of Thrones, the sitcom Maron, and Dredd, there was a kind of crackle that didn't seem to be intentional. I'm hoping that it is my speakers and I'm not beating a dead horse with the receiver, but it sounds pretty good 95% of the time. Also, are the factory M22s refurbished? Thanks again for the speedy response and your help!