Akashic Guitar effects circuit lookup
VOLUMEGAINTONECALIBRE

125B · 4 knobs

PedalPCB· PCB379

Shrapnel Overdrive

Based on the ThorpyFX Gunshot OD

Category
Fuzz· OD / Distortion / Fuzz
Controls
Volume · Gain · Tone · Calibre
Price
$8.00in stock
Tags
125B, 125B 4-Knob (Type 1)
Buy the PCB at PedalPCB Build document9/13/25 Tayda drill template

From the vendor

Controls

• Volume

• Gain

• Tone

• Calibre

Details

• Designed for a 125B enclosure with top-mounted jacks

The company, product and service names used in this web site are for identification purposes only. All trademarks and registered trademarks are the property of their respective owners. This product is not manufactured or distributed by ThorpyFX, maker of the ThorpyFX Gunshot Overdrive.

PedalPCB is in no way affiliated with ThorpyFX.

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 43 rows

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RefValueNormalizedTypeNotes
Resistors 19
R110M10MResistor, 1/4W
R210M10MResistor, 1/4W
R35K15.1kResistor, 1/4W
R410K10kResistor, 1/4W
R543K43kResistor, 1/4W
R6820R820Resistor, 1/4W
R71K1kResistor, 1/4W
R8100R100Resistor, 1/4W
R9100K100kResistor, 1/4W
R1010K10kResistor, 1/4W
R114K74.7kResistor, 1/4W
R121K1kResistor, 1/4W
R131K1kResistor, 1/4W
R1410K10kResistor, 1/4W
R1551K51kResistor, 1/4W
R16510K510kResistor, 1/4W
R1004K74.7kResistor, 1/4W
R10110K10kResistor, 1/4W
R10210K10kResistor, 1/4W
Capacitors 11
C1100n100nFilm capacitor, 7.2 x 2.5mm
C2100n100nFilm capacitor, 7.2 x 2.5mm
C347p47pCeramic capacitor
C4220n220nTantalum capacitor
C5220n220nTantalum capacitor
C61u1uFilm capacitor, 7.2 x 5.0mm
C7100n100nFilm capacitor, 7.2 x 2.5mm
C8100n100nFilm capacitor, 7.2 x 2.5mm
C91u1uFilm capacitor, 7.2 x 5.0mm
C100100u100uElectrolytic capacitor, 5mm
C10147u47uElectrolytic capacitor, 5mm
Diodes 6
D19V19V1Zener diode 1/2W, 9.1V
D2BlueBLUE5mm Blue LED
D3BlueBLUE5mm Blue LED
D41N41481N4148Signal diode, DO-35
D51N41481N4148Signal diode, DO-35
D1001N58171N5817Schottky diode, DO-41
Transistors 2
Q1BS170BS170N-Channel MOSFET
Q22N39042N3904BJT transistor, NPN TO-92
ICs 1
IC1OPA2134OPA2134Dual op-amp, DIP8
Potentiometers 4
VOLUMEA100KA100k16mm right-angle PCB mount pot
GAINA1MA1M16mm right-angle PCB mount pot
TONEW20KW20k16mm right-angle PCB mount pot
CALIBREC5KC5k16mm right-angle PCB mount pot