Akashic Guitar effects PCB lookup
VOLBUTGAINTONE

1590B · 4 knobs

Fuzz Dog· Butter

Buttercup Fuzz

Based on the Buttercup

Category
Fuzz
Controls
Vol · But · Gain · Tone
Difficulty
Medium
Price
£43.20
Tags
fuzz

From the vendor

An absolute doozy of a fuzz from Freestompboxes member J D Barbato.

Basically a mash-up of Tone Bender Mk II and Mk III, topped off with a Big Muff style tone stack. It just works. You can nail most of the essential tones of both with some tweaking of the gain, butter (fuzz) and tone controls. The latter is flippable with the toggle switch, giving a different range of frequency fun.

Designed for a set of NPN germanium transistors, but works just as well with a silicon BJT in Q3 - so that's what we're providing with the kit.

Good NPN germaniums are hard to come by nowadays, so we can't give a definitive guide to what we'll provide. It'll be a mix of Russian cans or 2N3102, 2N3108, AC187 etc.

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 and vertical-mount pots. Please choose appropriate knobs.

Inspired by: Buttercup

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 4

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download the INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 31 rows

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RefValueNormalizedTypeNotes
Resistors 12
R11M1M
R21K1k
R310K10k
R4470K470k
R5100R100
R61K1k
R7470K470k
R810K10k
R910K10k
R101K1k
R1110K10k
R1215K15k
Capacitors 11
C11n1n
C2100n100n
C3100n100n
C433n33n
C53n33.3n
C63n33.3n
C733n33n
C8100n100n
C94u74.7uElectrolytic capacitor
C104u74.7uElectrolytic capacitor
C20100u100uElectrolytic capacitor
Diodes 1
D11N58171N5817
Transistors 3
Q1NPN Ge*NPN GE
Q2NPN Ge*NPN GE
Q32N5088**2N5088
Potentiometers 4
VOL100KAA100k
BUT100KBB100k
GAIN100KBB100k
TONE100KBB100k