hello - my current rig includes a mesa 400+ and an ampeg 6x10. I am thinking of getting an avatar 12" cab and wondering if my mesa 400+ tube beast will reproduce a clean tone from the upright (using K&K bass max PU & Pre amp). I don't think anyone has actually tried something like this - so feel free to leave your speculations. If i don't have to buy another head THAt would be nice! I figure it's worth a shot. thanks...erik.