JHS Fumble

The JHS Fumble: A Legendary Mistake Turned Into a Killer JFET Boost

Boutique Inspired JFET Clean Boost Tone

The JHS Fumble is one of the most unusual stories in modern effects pedal history. Born from an accidental circuit mix up during the development of the NOTADÜMBLË DIY pedal kit, the Fumble became its own thing after players fell in love with the clean side of the original release. What started as a mistake ultimately uncovered a forgotten circuit lineage connected to the elusive Dumble BBC 1 preamp design. The Fumble is a true bypass JFET clean boost that delivers enhanced clarity, touch sensitivity, and harmonic richness without masking your guitar’s natural voice. It has a sweetening effect that makes everything downstream feel more articulate and alive while retaining dynamic response and note separation.

Unique Input Control For Tone Shaping

Unlike traditional boost pedals, the Fumble features an Input control that simultaneously attenuates bass and input gain. Fully clockwise delivers the full frequency response and maximum punch, while rolling it back tightens the low end and sharpens the attack for a leaner, more focused response. The Output control acts as the master volume, allowing the pedal to function as anything from a subtle always on enhancer to a powerful front end boost for pushing overdrives and amplifiers harder.

Perfect For Stacking And Dynamic Amplifier Response

The Fumble excels as a front end tone shaper before overdrives, fuzzes, and edge of breakup amplifiers. It can tighten low end response, add articulation, and increase harmonic complexity without overwhelming your existing tone. Whether you are hitting the front of a tweed combo, a British style amp, or your favorite transparent overdrive, the Fumble adds dimension and responsiveness in a remarkably musical way. Placed at the end of the chain, it also works beautifully as a solo boost with enough output on tap to lift leads effortlessly above the mix.

Compact Design With Massive Utility

Simple, compact, and surprisingly versatile, the Fumble is designed for players who appreciate dynamic clean enhancement and smart pedal stacking options. The straightforward two knob layout makes dialing in usable sounds immediate and intuitive while the low current draw keeps it pedalboard friendly. This pedal ships with the original box and is ready for players chasing touch sensitive clean boost tones with an unusual and genuinely fascinating backstory.

Specifications

• True bypass JFET clean boost
• Controls: Input, Output
• Input control attenuates bass and gain simultaneously
• Output control functions as master volume
• 9V DC center negative operation only
• Current draw: 5mA
• Includes original box
• Power supply not included

This effects pedal ships fully insured with signature required.