Can you use the 1001rb2 as a power amp? There is no input for this but would using the effects loop return achieve the same results? In my SVT3pro it does, but the GK manual states that the loop is pre boost knob, so I'm wondering if I will loose the tone of the the preamp if I do this. I want to have a GK for my blues gig and use my SVP+GK (as pre+power) for my metal gig. Any insight?