I've seen from a few sites that you can use a voltage meter to measure how much power is coming out of amp to set your gain to the right output. I uploaded a file on one I found to my site so you can download it and take a look. It's a Excel file. http://www.flyin11spage.com/Pictures/Audio-Calc.zip If you go into Gain Control Adjustment you will see what I'm referring to. You are suppose to set the voltage meter to read AC voltage and insert the leads into the channels you are using. When I insert them into the speaker channel inputs I get nothing on the voltage meter. However, if I touch the power and ground it reads around the voltage on the chart. I'm not sure if that's what they meant how to do it or am I doing something wrong? I mean, I get no read out from the channels on the amp but I get the reading from the power and ground, that doesn't make too much sense to me. Wondering if anyone has ever tried this using a voltage meter and what were your results? How did you do it? I might just have to wing it and go the regular route and turn it little bit by little bit everyday till I get the right mark but that could take forever. This would be a faster way for me and I really don't like having to stop the car every so often and turn the dial and so on, all day long to try and find a good setting. Any help would be appreciated...Thanks 