The following was a review on another site for my receiver... Measured 1.5 Volts of "Zero Crossing Distortion" on the Center, and the left and right Rear Surrounds Channels at a -10db at 1K Hertz input leve. At a 5 volt output that's a whopping 25% distortion. Swept through the whole audio spectrum 20-20K Hertz. Got the same results. Front left and right Main channels look real clean. Sound clean too. Probably because JVC has bias trimmers on those circuit board for adjustments. You can look right through the ventilation opening on the top to see this. On the other channels the bias trimmers are missing and no provisions(holes drilled and solder pads) have not been made for the adjustment trimmers or fixed resistors. Center channel at low SPL is unbearable to listen to. Cliff Dryesdale's (tennis commentator) voice that distorted will cut you like a knife. I emailed the reviewer further and here are more of his responses... On the 7010 I could see through the vents in.top cover 5 printed circuit cards mounted from front to back in the amp,slightly right of center. Two of the PC's have little trimmer potentiometers on them which I assume is the bias resistor on the emiiter side of the power transistors for the right and left channels. The bias voltage for the Center, LR, & RR surround power sections probably have fixed valued resistor which determine the bias voltage. I could not see the little trimmers on three of the PC card. By using a tone generator and a scope and removing one of these fixed resistors and replaceing it with a variable resistor (trimmer) you can adjust the bias voltage for the lowest value of distortion. Then with a ohm meter measure the value of the trimmer at this low distortion point and repace it with a fixed resistor of this exact value. Then repeat the same steps for the other channels. If I had some schematics it would make the job easier for locating biasing resisotor. Maybe the schmo's are on JVC web-site. If I were you I would contact someone at JVC and bitch to high heaven for them to fix it for you or give you a new one or better yet your money back. Threaten to sick The Better Business Bureau on them or tell em your going to contact Sixty Minutes. Do I have any hope in getting anything from JVC here? Anyone have any advice on what I should do?