The M-Basis 2000 is an awesome amp. I used it with a Fender 8x10 cabinet and Sting Ray bass. This combo made any sound possible. I highly recommend the 8x10 cabinet with this amp.
I used the solid state side for the high end finger/pick clip sound and for a massive low end. The tube side made a great distorted midrange, then I would just merge the two and turn it up.