I was one of the first to jump on the "D" class micro bass amp band wagon years back, had all kinds of problems with the early one's I owned. Went back to old school heads for the past 4 or 5 years, (a pair of used Mesa M-6's), LOVE em' but I've put a bunch of miles on them! There's been some MAJOR improvements made in "D" bass amps recently and I'm thinking of jumping back on that wagon! I gig a Bergantino NV610 "sealed" cabinet and I'm aware that some heads don't work as well with a sealed cabinet as others do, (I've a G.K. MB2-500 "D" micro that's used as a rehearsal and stay in the truck back-up head. That head and a sealed cabinet is NOT a good combination to my ears.) So I'm wondering if anyone is working with their micro's into sealed cabinets and what the results are for them. After much research the two heads I'm leaning towards, Mesa D-800+ or a Aguliar AG-700, but would like to hear of other recommendations also.