Just wanted to post this for anyone looking to build a Son of Ben for bass:
For use with bass: I ended up switching out C1 and C2 for a 150n cap and C6 and C8 for 330n (what I had on hand, though I think anything 100n and above would have been fine). That really opened up the pedal and makes it sound a lot fuller and more useful on bass. Also omitted C5 so that there's more gain before breakup. Also, run it at 18V for more headroom.
That's it! Sounds really good now.
For use with bass: I ended up switching out C1 and C2 for a 150n cap and C6 and C8 for 330n (what I had on hand, though I think anything 100n and above would have been fine). That really opened up the pedal and makes it sound a lot fuller and more useful on bass. Also omitted C5 so that there's more gain before breakup. Also, run it at 18V for more headroom.
That's it! Sounds really good now.