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Function f(x) Clusterfuzz Jr. main image

Function f(x) Clusterfuzz Jr.

Function f(x) Clusterfuzz Jr.

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Page last updated Aug 11, 2025

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The Clusterfuzz Jr. is the smaller brother to our Clusterfuzz. It’s the same circuit under the hood, with a few less features to allow it to fit into a standard 125B-sized enclosure. It uses the same types and values of components as its bigger brother, we simply scaled it down to a smaller footprint based on feedback from our customers. You asked; we listened!

As with all Function f(x) pedals, the Clusterfuzz Jr. sports a soft-touch, relay-based true bypass switching system.

Three clipping options for different saturation levels: No diode clipping, LED, and silicon diodes Volume, Tone and Fuzz knobs An “8-Bit/24-bit” switch to toggle between tight fuzz and square-wave velcro sounds Soft touch (true) bypass Top mounted jacks Laser-etched artwork 9v DC operation (industry standard) 20mA current draw (10mA when bypassed) Enclosure size: 4.78″ x 2.61″ x 1.6″ (12.14 x 6.63 x 4.05 cm) Weight: 10 oz (283 g)

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Mike Hermans

Function F(X) Clusterfuzz jr

Video thumbnail for Function F(X) Clusterfuzz jr by Mike Hermans

Function F(X) Clusterfuzz jr

Mike Hermans

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