Big Beefy Preamp - Boost and Overdrive

Sister circuit of the Acti-Boost (Type A and Type R), offering a lot more oomph for your signal .

Baxandall active EQ circuitry to keep your tone clean and crisp, offering +/- 15db on bass and treble, and 30dB boost, ranging from clean sparkle to full-on overdrive.

You can also opt for more bass-friendly caps, which change the frequency filtering at the input, and also adjusts the EQ control frequencies. This isn't a bass circuit, but can be used to great effect on your 4 (or 5)-string.

We're now offering a log pot for the volume control, as the sweep of the original linear isn't great.

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

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 will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosures. Please choose appropriate knobs.

Inspired by: B.B. Preamp

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 4

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download theINSTRUCTION PDF

Product Code: BBPre

Brand: Pedal Parts

Weight: 130.0g

Product Condition: New

Kit type* Ribbon connector?* Vol Pot* Bass-friendly Caps?*

£33.60 inc. tax

£28.00 ex. tax

? Tax based on United Kingdom.

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Customer Reviews

3 review(s) posted (write review)

My favourite drive
"I absolutely love this circuit. The drive pot has an enormous range going from light drive to full on crunch. The tone controls are super responsive too. Push the treble to get some really convincing Jonny Greenwood like distortion and blend in the bass to get some really great Marshall-like drive. It's an underrated gem waiting to be found. Clear and extensive documentation and top quality parts from Fuzz Dog as usual." Work The World, Martin Samuels - 12 May 2023

Nice
"Fully agree with Alex review - this pedal is nice. Just want to add, that maybe you should think about changing volume pot pot to log also, for the same reason: it becomes lowder than clean signal at less than 25%" Sync_0 - 29 August 2019

Very flexible overdrive
"Exceeded my expectations. It's a very allround boost/overdrive which goes from just a little bit of spark all the way to creamy crunch heaven. Very nice to hear all settings in between are (more than) useable, expecially with the great EQ. Try it with Bass all the way up, very tube-like. One thing: I had to replace the Drive pot with an audio taper one (A1M). The linear pot jumped from zero to about 60% drive within the first 10% of a turn in my case." Alex - 20 October 2015