I've got a new Peavey Pro Bass 500 I'm sitting on, but I just don't need it because my band is dwindling away and every place I play I can just DI or use my combo. These are great heads, way better sound wise than most anything Peavey put out. It has a tube pre and the most options on EQ I've seen anywhere. I bought it on closeout from an eBay store, so it's new and therefore you could register a warranty (I haven't yet, so it's fair game). Only issues are some scratches on the top, presumably because it was racked as a display item.
http://www.musiciansfriend.com/produ...amp?sku=481386
is the Musician's Friend link with specs and a manual. I'm asking $400 plus shipping, so you're saving a good $350 on it.