Hmmm . . . 6 or 7 depending on how you score it . . .
GK 1001RB2 with SBX410 and SBX115 (running GK biamp)
MusicMan HD500 with 2 Audiophile 2x12 cabs
Mesa Bass 400+ with 2 EV TL606 (Mesa Diesel, by any other name)
BBE BMAX-T to a Crest CA9 with a Bergantino HT322
Acoustic B450 combo (bought basically dead for dirt cheap), $20 to fix . . .
Orange Crush 50 combo
Phil Jones Bass Buddy (the questionable 7th)
Separate from those, I have a rack bag with my Sennheiser EW-D wireless, a dbx 160A compressor, power distribution, and a tuner that can drop atop and integrate into any of the non combos (wireless to the amp input, com;ressor in the FX loop).