So I bought a valve drive from some guy on the interwebs. It gets to my home, I just do a very quick check to make sure it turns on and sound comes out, and tell the guy it arrived in good shape. Putting the pedal through the paces today, I found that it has a significant volume drop off. I checked and made sure that the pad button was "off" and used my Rick and my jazz with an audere 9v preamp for testing. In order to get the same volume out as if the pedal was bypassed I have to have the volume cranked all the way and the gain at 12 o'clock minimum. Would this be a tube problem? I actually tried another tube in it and still had the same issue. I have heard really great things about this pedal, but this is driving me nuts.