I've never played with the Bass MuRF, but have played with the guitar MuRF (which claimed to be suitable for bass when it originally came on the market). They are interesting pedals, maybe to their own detriment. I found that it was great if you wanted to write music that was intended to be played with it. But it was certainly over the top, and not particularly useful for imitating any familiar sounds (this could be my own lack of skill to blame). I ended up trading mine for an SF-2 from a club member, and have never really missed it.