The Proteus Germanium Fuzz is a simplified version of the classic Fuzz Face circuit, designed to capture the iconic tone made famous by Jimi Hendrix. It is similar to the Solaris, another Aion FX project based on the Fuzz Face, but without the added modifications.

One of the modifications in the Proteus is a charge pump, which allows the pedal to operate at -9V using a standard +9V power supply. This is necessary because germanium PNP transistors, which are used in the circuit, require a negative supply. This modification ensures compatibility with other pedals and standard power supplies.

The second modification is a switchable pickup simulator at the input. The Fuzz Face was originally designed to be connected directly to an electric guitar, and it can lose some of its character if fed a low-impedance signal. The pickup simulator solves this problem by adding a transformer, resistor, and capacitor to convert the source signal into a higher impedance that the Fuzz Face prefers. This pickup simulator, invented by Jack Orman of AMZ, has been used in commercial pedals like the Earthquaker Devices Erupter.

While the pickup simulator won’t provide the same level of interactivity with the guitar’s tone and volume as a direct connection, it helps retain the tonal character of the Fuzz Face. When the pickup simulator is turned off, it is fully bypassed and out of the circuit, allowing for a direct connection if desired. The pickup simulator should only be enabled if the Proteus is placed in a position other than first in the signal chain.

Summary created by AI from the original source.