Rawkworks Light OD absolutely kills for bass. I have both versions, there’s a 3 knob (gain, treble, volume) and 4 (gain, treble, bass and volume)
Worth it 110% if you can find one.
I also have the Klon KTR, moderately meh for bass, but kills on guitar. Haven’t used it much for bass though.
Seconded. Had the 4 knob for a while and it was awesome in a mix. I didn’t like the solo sound, but in a song context it made complete sense.