So, I love the tone of my PJB Suitcase combo with 4B extension cab. But sometimes you want a little bit of squishy funk. The PJB is too clean for that.
Bought this on eBay:
It's basically the same thing as an ART Tube MP, but supposedly better voiced for the bass guitar. I'd been looking for one for a while.
Gives the bass a fatter tone with a slight roll-off in the highs and a moderate amount of tubey compression. If you crank the gain, it'll add a bit of grit. Not full-on SVT overdrive, but a little edge.
I'm very happy with it. Anyone with a "sterile" or "polite" amp looking for some greasiness should check it out.