One of the pedals that put Death by Audio on the map - the Supersonic Fuzz Gun.  It has been reported as quite hit and miss depending on the exact type of transistors used, so best to breadboard or prepare for some experimentation.

2 x MPSA06G and 1 x BC517 (Q3) are reportedly a better choice for transistors.  As always, check pinouts.

DEATH BY AUDIO SUPERSONIC FUZZ GUN   |    POINT-TO-POINT LAYOUT