Yep, the pre is fine. I haven't decided whether or not to bother with a repair of the power section yet, although the repair contractors are located pretty close to me. When I have some time, I'll at least get a quote from them, but I'm pretty sure I'd rather just try something else.
My initial idea was having it repaired and rehoused in a more space-saving enclosure. I might not after having been reminded of the existence of the Broughton stuff, but I gotta admit that the DI, boost, and tone section combo is pretty killer and I haven't got a CLUE why Markbass discontinued it. Well, one hypothesis, anyway. Maybe they figured it was too much of what makes a Markbass head great for too little money?
Makes perfect sense to me. Markbass no doubt would prefer for customers to purchase a complete head rather than something like the Super Booster. If I had your little gizmo I would have Roy Page bring it up to spec for me and then figure out how to integrate it into my rig. If you decide to get rid of it, I would like first dibs (presuming I can afford your asking price)! I love little projects like this. They take up way too much time and cash. But they're so much fun!