Akashic Guitar effects circuit lookup
PREAMPBIASBOOSTFILTER

125B · 4 knobs

PedalPCB· PCB592

Eschaton Preamp

Based on the Catalinbread Epoch Bias· 2 other boards clone it

Category
Boost
Controls
Preamp · Bias · Boost · Filter
Price
$12.00in stock
Tags
125B
Buy the PCB at PedalPCB Build document4/12/24

From the vendor

Controls

• Preamp

• Bias

• Boost

• Filter

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 Catalinbread Effects, maker of the Catalinbread Effects Epoch Bias.

PedalPCB is in no way affiliated with Catalinbread 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 51 rows

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RefValueNormalizedTypeNotes
Resistors 21
R12M22.2MResistor, 1/4W
R2100K100kResistor, 1/4W
R31M1MResistor, 1/4W
R4820R820Resistor, 1/4W
R522K22kResistor, 1/4W
R62M22.2MResistor, 1/4W
R72M22.2MResistor, 1/4W
R8100K100kResistor, 1/4W
R9100K100kResistor, 1/4W
R1068K68kResistor, 1/4W
R11100K100kResistor, 1/4W
R125K15.1kResistor, 1/4W
R1322K22kResistor, 1/4W
R14300K300kResistor, 1/4W
R1547K47kResistor, 1/4W
R1639K39kResistor, 1/4W
R17100K100kResistor, 1/4W
R18510R510Resistor, 1/4W
R100100R100Resistor, 1/4W
R101100R100Resistor, 1/4W
CLR4K74.7kResistor, 1/4W* LED current limiting resistor
Capacitors 17
C1220p220pCeramic capacitor
C222n22nFilm capacitor, 7.2 x 5.0mm
C3100n100nFilm capacitor, 7.2 x 2.5mm
C4100n100nFilm capacitor, 7.2 x 2.5mm
C5470p470pCeramic capacitor
C610u10uElectrolytic capacitor, 5mm� 35V minimum
C7100n100nFilm capacitor, 7.2 x 5.0mm
C833n33nFilm capacitor, 7.2 x 5.0mm
C91n1nFilm capacitor, 7.2 x 5.0mm
C1727u27uElectrolytic capacitor, 5mm
C10015p15pCeramic capacitor
C10110u10uElectrolytic capacitor, 5mm� 35V minimum
C10210u10uElectrolytic capacitor, 5mm� 35V minimum
C10310u10uElectrolytic capacitor, 5mm� 35V minimum
C10410u10uElectrolytic capacitor, 5mm� 35V minimum
C105220u220uElectrolytic capacitor, 5mm� 35V minimum
C10647u47uElectrolytic capacitor, 5mm� 35V minimum
Diodes 6
D1001N58171N5817Schottky diode, DO-41
D101BAT46BAT46Schottky diode, DO-35
D102BAT46BAT46Schottky diode, DO-35
D103BAT46BAT46Schottky diode, DO-35
D104BAT46BAT46Schottky diode, DO-35
D1051N4748A1N4748A / 22VZener diode 1W, 22V
Transistors 2
Q12N54572N5457JFET transistor, N-channel* Parameters on page 3
Q2MPSA18MPSA18BJT transistor, NPN TO-92
ICs 1
IC100LT1054LT1054Charge pump IC, DIP8* Substitution not recommended
Potentiometers 4
PREAMPA500KA500k16mm right-angle PCB mount pot
BIASC5KC5k16mm right-angle PCB mount pot
BOOSTC10KC10k16mm right-angle PCB mount pot
FILTERB25KB25k16mm right-angle PCB mount pot

Other boards based on the Catalinbread Epoch Bias