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BOSS BD-2

Based on the Boss BD-2 Blues Driver· 9 other boards clone it

Category: Distortion· Distortion Boost and Overdrive
Price: see vendor
Tags: Distortion Boost and Overdrive

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 120 rows

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Check before you build · 4 values the reader of this schematic was not sure of

R9: 6.8K, first digit blurred (could be 5.8K, not a standard value)
R48: printed like R46, which is already the 56K
C28/C29: both labels look alike; read the 0.047 as C28 and the 470P as C29
D2: part number read as S5688

Ref	Value	Normalized	Type	Notes
Resistors 50
R1	1K	1k		read from the schematic by eye
R2	10K	10k		read from the schematic by eye
R3	100K	100k		read from the schematic by eye
R4	10K	10k		read from the schematic by eye
R5	10K	10k		read from the schematic by eye
R6	2.2K	2.2k		read from the schematic by eye
R7	100K	100k		read from the schematic by eye
R8	100K	100k		read from the schematic by eye
R9	6.8K	6.8k		read from the schematic by eye
R10	470K	470k		read from the schematic by eye
R11	100K	100k		read from the schematic by eye
R12	10K	10k		read from the schematic by eye
R13	470K	470k		read from the schematic by eye
R14	100K	100k		read from the schematic by eye
R15	1M	1M		read from the schematic by eye
R16	100K	100k		read from the schematic by eye
R17	100K	100k		read from the schematic by eye
R18	10K	10k		read from the schematic by eye
R19	10K	10k		read from the schematic by eye
R20	10K	10k		read from the schematic by eye
R21	1.2K	1.2k		read from the schematic by eye
R22	100K	100k		read from the schematic by eye
R23	220K	220k		read from the schematic by eye
R25	2.2K	2.2k		read from the schematic by eye
R26	5.6K	5.6k		read from the schematic by eye
R27	33K	33k		read from the schematic by eye
R28	2.2K	2.2k		read from the schematic by eye
R29	22K	22k		read from the schematic by eye
R30	4.7K	4.7k		read from the schematic by eye
R31	1.5K	1.5k		read from the schematic by eye
R32	2.2K	2.2k		read from the schematic by eye
R33	2.2K	2.2k		read from the schematic by eye
R34	2.2K	2.2k		read from the schematic by eye
R35	1M	1M		read from the schematic by eye
R36	4.7K	4.7k		read from the schematic by eye
R37	330K	330k		read from the schematic by eye
R38	100K	100k		read from the schematic by eye
R39	1.2K	1.2k		read from the schematic by eye
R40	56K	56k		read from the schematic by eye
R41	1M	1M		read from the schematic by eye
R42	100	100		read from the schematic by eye
R43	56K	56k		read from the schematic by eye
R44	100K	100k		read from the schematic by eye
R45	56K	56k		read from the schematic by eye
R46	56K	56k		read from the schematic by eye
R47	100K	100k		read from the schematic by eye
R48	1M	1M		printed R46/R48, read as R48 since R46 is the 56K; read from the schematic by eye
R50	1M	1M		read from the schematic by eye
R51	15K	15k		read from the schematic by eye
R52	1M	1M		read from the schematic by eye
Capacitors 38
C1	10uF	10u		16V; read from the schematic by eye
C2	47uF	47u		6.3V; read from the schematic by eye
C3	100uF	100u		16V; read from the schematic by eye
C4	47uF	47u		16V; read from the schematic by eye
C5	100uF	100u		16V; read from the schematic by eye
C6	10uF	10u		16V; read from the schematic by eye
C7	10uF	10u		16V; read from the schematic by eye
C8	0.0022uF	2.2n		read from the schematic by eye
C9	0.056uF	56n		read from the schematic by eye
C10	0.047uF	47n		read from the schematic by eye
C11	47uF	47u		6.3V; read from the schematic by eye
C12	10uF	10u		16V; read from the schematic by eye
C13	10uF	10u		16V; read from the schematic by eye
C14	0.047uF	47n		read from the schematic by eye
C15	10uF	10u		16V; read from the schematic by eye
C16	0.056uF	56n		read from the schematic by eye
C17	0.0068uF	6.8n		read from the schematic by eye
C18	0.1uF	100n		read from the schematic by eye
C19	0.0056uF	5.6n		read from the schematic by eye
C20	100P	100p		read from the schematic by eye
C21	47P	47p		read from the schematic by eye
C22	0.15uF	150n		35V tantalum; read from the schematic by eye
C23	47P	47p		read from the schematic by eye
C24	1uF	1u		35V tantalum; read from the schematic by eye
C25	100P	100p		read from the schematic by eye
C26	220P	220p		read from the schematic by eye
C27	0.0022uF	2.2n		read from the schematic by eye
C28	0.047uF	47n		read from the schematic by eye
C29	470P	470p		read from the schematic by eye
C30	220P	220p		read from the schematic by eye
C31	470P	470p		read from the schematic by eye
C32	220P	220p		read from the schematic by eye
C33	0.01uF	10n		read from the schematic by eye
C34	0.1uF	100n		read from the schematic by eye
C35	0.047uF	47n		read from the schematic by eye
C36	0.047uF	47n		read from the schematic by eye
C100	0.018uF	18n		on VR board 2; read from the schematic by eye
C101	0.018uF	18n		on VR board 2; read from the schematic by eye
Diodes 11
D1	1SS133	1SS133		read from the schematic by eye
D2	S5688	S5688		reverse-polarity protection; read S5688(G); read from the schematic by eye
D3	1SS133	1SS133		read from the schematic by eye
D4	1SS133	1SS133		read from the schematic by eye
D5	1SS133	1SS133		read from the schematic by eye
D6	1SS133	1SS133		read from the schematic by eye
D7	1SS133	1SS133		read from the schematic by eye
D8	1SS133	1SS133		read from the schematic by eye
D9	1SS133	1SS133		read from the schematic by eye
D10	1SS133	1SS133		read from the schematic by eye
D11	RD5.6EB2	RD5.6EB2		zener; read from the schematic by eye
Transistors 16
Q1	2SC2458GR	2SC2458GR		read from the schematic by eye
Q2	2SC2458GR	2SC2458GR		read from the schematic by eye
Q3	2SK184GR	2SK184GR		JFET; read from the schematic by eye
Q4	2SK118Y	2SK118Y		JFET switch; read from the schematic by eye
Q5	2SC2458GR	2SC2458GR		read from the schematic by eye
Q6	2SK118Y	2SK118Y		JFET switch; read from the schematic by eye
Q7	2SC2458GR	2SC2458GR		read from the schematic by eye
Q8	2SK118Y	2SK118Y		JFET switch; read from the schematic by eye
Q9	2SA1335GR	2SA1335GR		read from the schematic by eye
Q10	2SK184GR	2SK184GR		JFET; read from the schematic by eye
Q11	2SK184GR	2SK184GR		JFET; read from the schematic by eye
Q12	2SA1335GR	2SA1335GR		read from the schematic by eye
Q13	2SK184GR	2SK184GR		JFET; read from the schematic by eye
Q14	2SK184GR	2SK184GR		JFET; read from the schematic by eye
Q15	2SC2458GR	2SC2458GR		read from the schematic by eye
Q16	2SC2458GR	2SC2458GR		read from the schematic by eye
ICs 1
IC1	M5218AL	M5218AL		dual op amp; IC1A is the 4V bias buffer, IC1B in the tone/output stage; read from the schematic by eye
Potentiometers 3
VR1	A250K	A250k	Potentiometer	dual gang VR1A/VR1B (Gain); read from the schematic by eye
VR2	B10K	B10k	Potentiometer	Tone; read from the schematic by eye
VR3	A100K	A100k	Potentiometer	Level; read from the schematic by eye
LEDs 1
×1	LN-28RP	LN-28RP		check LED on the LED board, no designator; read from the schematic by eye

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