If you are looking for that 70's distortion sound, I recommend a BJF Blueberry bass overdrive. It really excels at this. The tone control is different from the typical treble roll-off type. This control adjusts mid emphasis. Only at the most extreme positions do you get treble or bass shelving.
After finding some clips of that pedal. I need something with more distorsion, basically a fuzz with mostly mid range
Fulltone 70's pedal... It is a silicone transistor fuzz with Volume, Mids, and Fuzz controls... Since the only tone control is for Mids I think its what you need... cheers Alex
The Blueberry can get into a heavy distortion/Fuzz. Fuzz is, in my opinion, heavy distortion with lots of bottom end. I have not tried the 70's pedal, but I would assume that the mids are tailored to guitar mids since it is a guitar effect. Still, it could sound good.