I'd like to check out some power amps to drive my EA cabs to see if I might want to go in the preamp/poweramp direction for my rig. I've been using an AI Clarus to drive the cabs and am happy with the sound but the power is a bit short. My question is, how can I use the Clarus to act as a preamp when I "testdrive" poweramps? How would I make the cable connections? Line out? Effects send? I know nothing, so no answer is too basic, thanks.