I have a 60W combo valve amp (H&K statesman 6L6) and the HD500, I wanted to play live on that by entering into the amp's return and using the "no cab" on the pod. My question is, the guitar amp has EQ knobs for the two channels, a reverb knob, a presence knob, volume knob (channel 1, clean) and master knob (channel 2, gain), and a boost button. If i bypass the preamp, do I bypass ALL EQ/volume/reverb knobs and the boost? Do I use none of the amp channels at all? I wanted to know this because I plan to leave all the EQ/reverb/boost stuff to the pod, and I must know if leaving my amp knobs and buttons in casual positions will affect my sound. Thanks!