update on my thread after 5 yrs, recently purchased a bnew sd-1 again and moded it to tubescreamer tone and
it sounded like 98% ts808, for the record this are the changes made
c4 ->0.022uf (223)
c5 ->0.1uf (104)
c6 ->0.0562uf (562)
diodes are stock(nice grit when driven hard than making it asymetrical so keep it that way)
try it to your sd-1
![afro :mrgreen:](http://talk.philmusic.com/Smileys/default/rockn_roll.png)