This is a copy of the legendary Fuzz Face which was used by Jimi Hendrix in the late 60's. The essential parts of this Fuzz are the Germanium transistors (AC128s) that make the great sound for this box. Because of big tolerance of the old AC128s the ideal fuzz sound can only be found by testing the box with many transistors. That's why the transistors have been installed with screws.

For more information see: Fuzz Face article