The Solar Face Fuzz is a modified version of the popular Fuzz Face pedal, known for its warm and fuzzy tone. The main feature of the Solar Face Fuzz is the addition of an external bias control, allowing users to adjust the bias of the pedal on the fly. This feature is particularly useful for compensating for temperature variations that can affect the performance of germanium transistors, commonly used in Fuzz Face circuits.The Solar Face Fuzz is available in two different kits, depending on the stock availability. The first kit includes Russian germanium transistors (AC125/8) and is wired as a positive-ground PNP circuit. This version can be used with an isolated power supply or with the optional on-board voltage inverter, which allows for daisy-chaining power with other standard pedals.The second kit option features NPN silicon transistors (BC108), which provide a slightly harder fuzz tone reminiscent of the solos on Pink Floyd’s ‘Dark Side of the Moon.’ This version includes spots for smoothing capacitors to prevent any squealing at higher gain settings.It is important to select the correct combination of options when ordering the Solar Face Fuzz kit to avoid any complications or confusion. Ordering the NPN Silicon kit along with the Power Inverter parts, for example, can lead to email communication issues and potential problems with the build.Overall, the Solar Face Fuzz offers the classic Fuzz Face sound with the added flexibility of an external bias control, allowing users to fine-tune their fuzz tone to their liking.

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