I have read all the forums that touch on this about other amplifiers and receivers. The problems all turned out to be external issues, (speaker impedance, bad connections, ect.) I have thoroughly check repeatedly for any of these to be the source of this problem. This unit is extremely clean, new connection cables, new 14 gauge speaker wire, speaker impedance of 7.1ohm. This problem only happens when the volume is more than 2 (second click of volume control) 3 to 6 clicks it happens within 5-10 minutes, 10+ clicks happens immediately. Also when the unit is shut off there is a loud pop through the speakers, even when the volume is turned down. How can these issues be corrected? Thank you AK!