I had one, I didn't like it on bass, which was disappointing. It was fine as a clean mic preamp but I got very unpleasant distortion on bass. I did buy it used very inexpensively, so it's possible that the tube had issues. I sold it though, didn't really need it. I'm glad it's working for others though.
lol, I have a couple of these in my effects closet, never tried one on bass. Thanks for the tip.
I just got a the Studio V3 model last week, looking forward to try its bass setting on my board at band rehearsal Wednesday. I've only tried it so far via my Yamaha 500 StagePas console through headphones, but the various settings differences' are quite noticeable, with the bass setting bringing more ooomphhh to my small practice rig (bass>lmb-3>b1on>M5>ART>console). One thing tho, it seems to clip easier than the basic MP model, so I'll keep an eye on that. If it doesn't work out on bass, it already has a spot in my humble home studio.