There have been a number of posts and unrelated messages about the 3PRO, and power or apparent lack of power. One thing that has come up elsewhere is a misconception about the "tube gain". Frankly, I wish it had a different name. It sounds like you should turn it down to avoid having some sort of distortion effect. I have had some folks ask about that, so maybe its worth a reminder here. Turning "tube gain" DOWN reduces the voltage on the driver tube plates. That increases distortion/compression, and reduces gain, possibly making the unit appear to have much less power before distortion. The effect is more defined as the volume is turned up. So, actually, you should turn it up to have it NOT do anything, and turn it DOWN to bring it into effect. For maximum gain and clean power, the "tube gain" should be turned UP all the way.