Akashic Guitar effects circuit lookup
VOLUMEFILTERINPUT

125B · 3 knobs

PedalPCB· PCB709

NOTADOOMER

Based on the Audio Surplus Effects OK Doomer· 5 other boards clone it

Category
Fuzz· OD / Distortion / Fuzz
Controls
Volume · Filter · Input
Price
$10.00in stock
Tags
125B
Buy the PCB at PedalPCB Build document7/1/25

From the vendor

Controls

• Volume

• Filter

• Input

Details

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

The company, product and service names used in this web site are for comparative purposes only. All trademarks and registered trademarks are the property of their respective owners. This product is not manufactured or distributed by Audio Surplus Effects, maker of the Audio Surplus Effects OK Doomer.

PedalPCB is in no way affiliated with Audio Surplus Effects.

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 41 rows

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RefValueNormalizedTypeNotes
Resistors 22
R11M1MResistor, 1/4W
R21K51.5kResistor, 1/4W
R3100K100kResistor, 1/4W
R4390R390Resistor, 1/4W
R515K15kResistor, 1/4W
R6470K470kResistor, 1/4W
R77K57.5kResistor, 1/4W
R8470K470kResistor, 1/4W
R915K15kResistor, 1/4W
R10100R100Resistor, 1/4W
R11100K100kResistor, 1/4W
R127K57.5kResistor, 1/4W
R13470K470kResistor, 1/4W
R1415K15kResistor, 1/4W
R15390R390Resistor, 1/4W
R16100K100kResistor, 1/4W
R171K1kResistor, 1/4W
R1810K10kResistor, 1/4W
R19100K100kResistor, 1/4W
R20430K430kResistor, 1/4W
R212K22.2kResistor, 1/4W
CLR4K74.7kResistor, 1/4W* LED current limiting resistor
Capacitors 11
C1820n820nFilm capacitor, 7.2 x 5.0mm
C2470p470pCeramic capacitor
C368n68nFilm capacitor, 7.2 x 2.5mm
C4470p470pCeramic capacitor
C582n82nFilm capacitor, 7.2 x 2.5mm
C682n82nFilm capacitor, 7.2 x 2.5mm
C7820n820nFilm capacitor, 7.2 x 5.0mm
C83n33.3nFilm capacitor, 7.2 x 2.5mm
C947n47nFilm capacitor, 7.2 x 2.5mm
C100100u100uElectrolytic capacitor, 5mm
C101100n100nFilm capacitor, 7.2 x 2.5mm
Diodes 1
D1001N58171N5817Schottky diode, DO-41
Transistors 4
Q1MPSA18MPSA18BJT transistor, NPN TO-92
Q2MPSA18MPSA18BJT transistor, NPN TO-92
Q3MPSA18MPSA18BJT transistor, NPN TO-92
Q4MPSA18MPSA18BJT transistor, NPN TO-92
Potentiometers 3
VOLUMEB100KB100k16mm right-angle PCB mount pot
FILTERB10KB10k16mm right-angle PCB mount pot
INPUTB1MB1M16mm right-angle PCB mount pot

Other boards based on the Audio Surplus Effects OK Doomer