i have a bogen mo-200 is pushing 75wpc and it has single gain pot. And i know this subject has been beaten to death. But i would like to use my dynaco pre-amp so do i turn the gain on the bogen all the up and control volume thru the dynaco? Or turn voume up on the dynaco and control the volume thru the bogen? All the caps have been replaced in the power supply and all the other ones too and a new three prong plug has been added and the circuit was change to run 6550's .:thmbsp: