JHS Pedals The Fumble - Boost / Buffer

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JFET Preamplifier

Boost / Buffer
Inspired by BBC-1 (Barcus Berry acoustic preamp clone)
Versatile enough to suit a wide range of amplifier and pedalboard setups
Sound character ranging from "clear", "dynamic" and "crisp" to "full" and "warm", depending on the setting of the input control
Can be used as a front-end buffer, clean boost, overdrive driver or solo boost
The output control adjusts the master volume
The input control adjusts both bass and gain simultaneously
True bypass switch
Status LED
6.35 mm jack input
6.35 mm jack output
Power supply via optional 9V DC (not included)
Current consumption: approx. 5 mA, centre negative
Dimensions (L x W x H): 100 x 50 x 31 mm
Weight: 181 g

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since June 2026
Item number 646273
Sales Unit 1 piece(s)
Effect Types Boost/Buffer

£79

All prices incl. VAT

Sales Rank

in Miscellaneous Guitar Effects

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4.7 / 5

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4 Reviews

A Beautiful Mistake

AdriaRT 04.07.2026

A functional and practical pedal, with an interesting backstory.

The pedal itself is a nice clean boost and/or buffer enhancer which has many uses, and it is always a really handy circuit to have in your arsenal.

It is well built and simple to operate, and it is also quite beautiful (even if you do not like american football particularly).

But the best part for me is knowing its origin story and legacy, that alone is worth the price.

The only real con for me is that it has no battery compartment, so it is expected to run with a plug, but this should not bother most people.

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Loving this boost pedal

Chris Sar 26.08.2026

I was looking for a boost pedal that adds both some volume increase but also bring some extra body / grit to my leads.

I am using the Fumble at the end of my chain (after the drives) and works like a charm in boosting solos. Cuts great through the mix and that input control allows you to moderate bass frequencies upon your liking.

Another amazing JHS product.

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Von wegen fummelig.....

Krishan.M 17.08.2026

In der Medizin würde man dieses "Teil" als Stimmungsaufheller bezeichnen und das ist es in der Tat.Getestet mit Marshall / Vox und Fender-Amps,entfaltet dieses Pedal an jedem Amp seine Wirkung....der Sound gewinnt an Räumlichkeit und kommt viel mehr nach vorne, für mich an meinem Fender Custom Pro Reverb eine Offenbarung.....

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Vergessen Sie alle Booster-Pedale, die Sie kennen.

FuzzBenders 19.06.2026

Es ist fantastisch! Es funktioniert wunderbar sowohl mit Humbucker Gitarren als auch mit Single-Coil Gitarren. Ein fantastisches Gefühl unter den Fingern! In Bezug auf Preis-Leistung ist es erstklassig.

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