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Tone Bender Mk III

The final chapter in the classic Tone Bender series, and by far the most versatile.

Whereas previous TBs had only Volume and Fuzz controls, the MkIII adds a Treble-Bass (Tone) knob to take you from crunchy bottom-rich fuzz to all-out cat-bothering treble filth.

As Tone Benders always work better with PNP transistors, this latest FuzzDog offering has the option of an onboard voltage-inverter so you can use these cans but still daisy-chain your power with standard negative-ground pedals. This is totally optional. You can build it in posi-ground format and use a battery or dedicated PSU if you like, or just go for NPN cans. Leaving out the inverter requires a single jumper wire on the PCB. Simple!

The choice of transistors will grow as more experimentation and fiddling goes on at FDHQ. There's plenty of room on the board to take the meatiest of vintage cans. Right now we're offering a combination of Russian MП16Б, MП41A and others we have in stock, Newmarket CV7007 (OC77), or you can have the kit without cans if you want to source your own.

There are also a few circuit variations on offer, with slight differences in specs. These will be added when parts arrive.

The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.

Note: OptoPuss bypass can only be used if you're including the voltage inverter. It is not compatible with posi-ground wiring.


If you want the PCB without parts there's a link for that at the bottom of the page.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and can take a battery if desired with footswitch positioned 22mm higher, closer to the controls. Knobs are not included.


Inspired by: Tone Bender MkIII

Difficulty: Easy-Medium

PCB size: 50 x 40mm

Knobs required: 2

Enclosure: 1590B

Direct-Connect compatible (4-way)


Download INSTRUCTION PDF

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New

£38.40 inc. tax

£32.00 ex. tax
? Tax based on United Kingdom.
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Customer Reviews

3 review(s) posted (write review)
Superb fuzz!! 5 product stars
"An excellent pedal, easy build thanks to FD s PCBs - I made mine with Russian military cans, Tonebender sets can be had from a few reliable suppliers for about a fiver (hFEs 63/65/102) and they perform outstandingly here. The tone and fuzz controls are very interactive, meaning that you can go from a thick, chuggy fuzz-o-drive to a squally screaming thing, with every shade of action in between. Sometimes I like to thrash away at the Mick Ronson and Johnny Thunders songbooks, just like when I played air-guitar during my youth, but, like, with a real guitar. The TB3 is ideal for this, and many other flavours of fuzz. Most of my fuzz builds are for fun and learning but don t get boxed up this one did because she s a keeper. I miss that air guitar should never have sold it" Sir Henry - 11 May 2021
Yes! 5 product stars
"What a fantastic fuzz pedal this is! Built using MP38A Ge NPN transistors, this thing delivers a thick fuzz, with such a versatile tone control. Rapidly becoming my favourite fuzz (and I love the Mk2 lots!). Fuzz on full, adjust tone, tune to drop 'D', and it's on!" Ian - 21 February 2020
Sweet, smooth and vintage. 5 product stars
"I've had quite a few originals and this clone is spot on. Goes from thick and sweet to trebly chainsaw fuzz without ever going splatty. It's tight enough to do 70'ies power chords as well as garage punk fuzz bombs. Tons of overtones. Mobile phone taster here: https://www.youtube.com/watch?v=Xqg6B_VMTjo" Tjærand - 14 November 2014

Don't forget to download the
General Build Guide

 

PRE-BUILT KITS:
We're only building for UK customers right now. Please don't order from elsewhere as we'll simply have to refund you. You're currently looking at two weeks for pre-built pedals. Hang tight!

 

PLEASE NOTE:
Full kits DO NOT include enclosures unless you select them in the 'Kit Type' drop-down menu.