125B · 5 knobs

AnubisSilicon Fuzz

Based on the Basic Audio Scarab Deluxe· 1 other board clones it

Category: Fuzz· Fuzz / Distortion
Controls: Body · Gain · Bias · Tone · Volume
Difficulty: Easy
Price: $12.50in stock

Buy the PCB at Aion FX Build document1.0.0 (2021-02-19) Mouser parts spreadsheet google

From the vendor

An adaptation of the classic Tone Bender Mk. II circuit using silicon transistors and a Big Muff-style tone control.

The Anubis Silicon Fuzz is an adaptation of the Basic Audio Scarab Deluxe, first released in 2010 as the successor to the original Scarab, which was in turn based on the Hot Silicon, a classic circuit in the DIY community that adapts the Tone Bender Mk. II for silicon transistors.

The Scarab Deluxe added an input capacitor blend as well as an external bias control for the third transistor. The original Scarab was discontinued after the Deluxe was released.

The Hot Silicon is also available from Aion FX as the Zircon Silicon Fuzz. The Zircon and Anubis projects are very similar to each other, but just different enough that they couldn’t be built on the same PCB.

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 41 rows

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Ref	Value	Normalized	Type	Notes
Resistors 17
R1	150k	150k	Metal film resistor, 1/4W
R2	22k	22k	Metal film resistor, 1/4W
R3	10k	10k	Metal film resistor, 1/4W
R4	1k	1k	Metal film resistor, 1/4W
R5	10k	10k	Metal film resistor, 1/4W
R6	100R	100	Metal film resistor, 1/4W
R7	47k	47k	Metal film resistor, 1/4W
R8	1k	1k	Metal film resistor, 1/4W
R9	750R	750	Metal film resistor, 1/4W
R10	100R	100	Metal film resistor, 1/4W
R11	10k	10k	Metal film resistor, 1/4W
R12	4k7	4.7k	Metal film resistor, 1/4W
R13	10k	10k	Metal film resistor, 1/4W
R14	2k2	2.2k	Metal film resistor, 1/4W
R15	100R	100	Metal film resistor, 1/4W	Power supply resistor. Not in original unit, but improves filtering and lowers noise.
RPD	2M2	2.2M	Metal film resistor, 1/4W	Input pulldown resistor. Can be as low as 1M.
LEDR	4k7	4.7k	Metal film resistor, 1/4W	LED current-limiting resistor. Adjust value to change LED brightness.
Capacitors 9
C1	10n	10n	Film capacitor, 7.2 x 2.5mm
C2	10uF	10u	Electrolytic capacitor, 5mm
C3	100n	100n	Film capacitor, 7.2 x 2.5mm
C4	4.7uF	4.7u	Electrolytic capacitor, 4mm
C5	100n	100n	Film capacitor, 7.2 x 2.5mm
C6	8n2	8.2n	Film capacitor, 7.2 x 2.5mm
C7	100n	100n	Film capacitor, 7.2 x 2.5mm
C8	100uF	100u	Electrolytic capacitor, 6.3mm
C9	100n	100n	MLCC capacitor, X7R
Diodes 1
D1	1N5817	1N5817	Schottky diode, DO-41
Transistors 4
Q1	2N5088	2N5088	BJT transistor, NPN, TO-92
Q2	2N5088	2N5088	BJT transistor, NPN, TO-92
Q3	2N5088	2N5088	BJT transistor, NPN, TO-92
Q4	2N5088	2N5088	BJT transistor, NPN, TO-92
Potentiometers 5
BIAS	25kB	B25k	16mm right-angle PCB mount pot
BODY	100kA	A100k	16mm right-angle PCB mount pot
GAIN	1kB	B1k	16mm right-angle PCB mount pot
TONE	50kB	B50k	16mm right-angle PCB mount pot
VOL.	100kA	A100k	16mm right-angle PCB mount pot
Switches 1
FSW	3PDT	3PDT	Stomp switch, 3PDT	Available from Aion FX.
Jacks & sockets 3
IN	1/4" stereo	1/4" STEREO	1/4" phone jack, closed frame	Switchcraft 112BX or equivalent.
OUT	1/4" mono	1/4" MONO	1/4" phone jack, closed frame	Switchcraft 111X or equivalent.
DC	2.1mm	2.1MM	DC jack, 2.1mm panel mount	Lumberg NEB/J 21 C or equivalent.
Hardware 1
ENC	125B	125B	Enclosure, die-cast aluminum	Can also use a Hammond 1590N1.

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