Solid Gold FX Rosie

 Happy Fuzz Friday, all! Here's a cool silicon Tone Bender style fuzz from Solid Gold Fx. Aside from using silicon transistors, the first stage is a JFET. When the switch is closed it adds in a 4.7uF input cap in parallel with the 330pF input cap. You could replace the switch with a B100k pot (lug 1 to Sw1 pad, lugs 2-3 to Sw2 pad) to blend the two values. Set the trimmer to 4.5v for the JFET and adjust by ear as needed. 

Solid Gold FX Super Drive

 Here's an interesting take on the classic DOD 250/MXR Distortion + circuit. It's pushed by a simple BJT boost and has an added presence control and tone switch. Schematic here. Easy to fit in a 1590B or 125B.

SolidGoldFx If 6 Was 9

Happy Fuzz Friday, everyone! Here's a nice little modded Fuzz Face from SolidGoldFx. The switch selects between input caps and the Bias pot adjusts the voltages to Q2. Other transistors can be used beside the BC183C in the original. As usual, sockets are your friends. Easy fit in a 1590B.