The Earthquaker Devices Terminal Fuzz is based on the Shin-Ei Companion Fuzz, with a few tweaks to improve performance and versatility. The first section is actually a lot like a silicon Fuzzrite. Q1 feeds directly into Q2 – they feed into either side of the treble control with quite small capacitors.
The treble pot is followed by a notch filter, found on many fuzz circuits of the day, but the EQD Terminal Fuzz has included a voice control, to adjust the filter. The notch filter is followed by a gain recovery section, as a notch usually drops a bit of level from the signal chain – a common issue in many old fuzzes with notch filters.
EARTHQUAKER DEVICES TERMINAL FUZZ – VERO LAYOUT
Read the comments below, as there has been a bit of disappointment with this one. A good suggestion was made by Tom, the 4n7 capacitor should be increased to 47n, which is the same as the Shin-ei.