Pandora’s Box

Based on the Bixonic Expandora· 4 other boards clone it

From the vendor

Controls

• Level – Controls the overall output volume

• Gain – Controls amount of distortion

• Tone – Adjusts the tone from warm to bright

• SW1 (toggle switch) – Toggles the clipping characteristics

• SW2 (toggle switch) – Toggles the clipping characteristics

Specifications

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

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

Ref	Value	Normalized
Resistors 23
R1	2M2	2.2M
R2	100K	100k
R3	2M2	2.2M
R4	2M2	2.2M
R5	43K	43k
R6	560R	560
R7	47R	47
R8	560R	560
R9	1K1	1.1k
R10	100K	100k
R11	51K	51k
R12	4K7	4.7k
R13	820K	820k
R14	47K	47k
R15	4K7	4.7k
R16	47R	47
R17	1K1	1.1k
R18	1K5	1.5k
R19	1M	1M
R20	1K1	1.1k
R100	4K7	4.7k
R101	10K	10k
R102	10K	10k
Capacitors 16
C1	100n	100n
C2	33p	33p
C3	1u	1u
C4	22n	22n
C5	1n	1n
C6	33p	33p
C7	100p	100p
C8	4u7	4.7u
C9	2u2	2.2u
C10	100n	100n
C11	4u7	4.7u
C12	3n3	3.3n
C13	100n	100n
C14	1u	1u
C100	100u	100u
C101	100u	100u
Diodes 4
D1	1N4148	1N4148
D2	1N4148	1N4148
D3	1N4148	1N4148
D100	1N5817	1N5817
Transistors 1
Q1	2N3906	2N3906
ICs 4
IC1	LM308N	LM308N
IC2	LM308N	LM308N
IC3	H11F1	H11F1
IC4	JRC4558	JRC4558
Switches 2
SW1	SPDT	SPDT
SW2	SPDT	SPDT