Im clearly uniformed. I really thought myself tech savy until I got into the whole AV world.
I didnt know the UPA-2 had a gain, the only control Im aware of is a power button and the ouput level on the back, (is this output level on the back the gain?)
I currently have this output level on the UPA-2 set at about 70%, this seemed to me like a good idea to help minimize distortion at high volumes.