The Bandmaster VM is a totally different amp, with a hybrid preamp, tube output, and digital effects. I have one paired with a Weber 15" that's great for guitar, but I think there are better bass heads available for that price. It isn't voiced for bass EQ, and I don't know of any feature that makes it particularly suitable for bass. Of course, if you like the sound, that will make the difference...but it sounds as though you haven't played through one.
"Digo: 'paciencia, y barajar'." -- Don Quijote de la Mancha, Part II, Chapter 23 / Fender fretless #3 TX bassist #48 fretless #233, Fender P #242, Godin #21, StingRay Club #468