Same here, I had asked on the 'General' board but no one seemed to have the same problem. My rear channel (lows) goes out if battery supply dips (icon appears), leaving me w/no lows, sounding as if the volume has decreased. I have found if I cycle thru the sources back to the original source it goes away and my rear channel comes back on.

#695-Mk2/8 colors-12Gig w/Tuner- awaits v2.x & Voice Recog.