5.1 System; I just put my 976 through the Auto Setup process. It registered 2 SB speakers not present and did not continue through the setup program. I then went to the speaker configuration menu and marked the SB speakers as "None." I then re-ran the program and it went through the entire program and gave an error message, "LS out of phase." Pretty cool, I would have never detected that...so I put the speaker in phase and ran the program again. The error was corrected, and different parameters were set for the out of phase speaker. Nicely done, Outlaw Audio! Sound is amazing...very clear, and the picture is outstanding...running THX Cinema on most sources (OTA Tivo; Apple TV; Fire TV; Blu-ray). This was not possible with my Denon 3808 CI. I played a concert Blu-ray, Rolling Stones 1978 Tour of Some Girls...no speaker level adjustment needed, and it sounded full and balanced.