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Schematic

BOM

R1

1M

R2

390R

R3

680R

R4

1M

R5

1M

R6

470K

R7

1M

R8

1M

R9

120R

R10

82K

R11

5K6

R12

82K

R13

47K

R14

10K

R15

10K

R16

2K2 (CLR)

C1

250p

C2

220n

C3

1u

C4

68n

C5

22n

C6

470p

C7

150p

C8

100n

C9

22n

C10

100n

C11

22n

C12

2n2

C13

1u elec

C14

2n2 

C15

100u elec

D1

1N4148

Q1

2N5457

Q2

2N5457

Q3

J201

Q4

J201

Q5

2N5457

DRIVE

500KA

TONE

100KB

VOL

100KA

TRIM

100K*

*Original spec is 100K - I supply 47K. Much easier to tweak the sweet spot.

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