Wren and Cuff Your Face 60's .Two genuine vintage (no remakes!) germanium transistors with slightly higher gains than most for a slightly hotter sound than most 60s style Fuzz Faces. I dont like to tell the transistor numbers and they are obscured because the genuine vintage type I like are becoming harder and harder to find. Features: Modified for higher output volume. Reverse log fuzz potentiometer that allows for finer tuning of the amount of fuzz applied. Period correct carbon