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8

7

6

5

4

3

2

1

J201 5P WIRE

SW1 1 2 3 4 5 JP5 JP JP6 JP JP7 JP JP8 JP
10 11 12 14 15 16 9

PD7
D

OD

JP4 JP

2 3 4 6 7 8

1

SW4-3 J301 4P JACK EQIN CUT OP-IN GND

SCHEMATIC PD7
BOTTOM PCB
BS7

CLEAN EQ3 EQ2 ZL1

5

JP9 JP JP10 JP

13

SW2 JP11 JP
2 3 2 3 4 7 8 9 1

D

TR2 2SC1815 GR C44
1 2 2 1 1 3

(TO FUNCTION SW PCB 1/2 J101) P101 3P PLUG VCC GND R70

FRET0 FRET1 FRET2 MIX J601 4P JACK P201 5P PLUG P301 4P PLUG

1 2 3 4

JP12 JP JP13 JP JP14 JP
6

SW2-3-A

J1

J102 3P WIRE
3 2 1 1 2 3

P102 3P PLUG
1 2 3

1U(NP) 50V C1 223 R1 1K
3

R13 10K C3
1 2

Q5 2SK118O

R65 510K R15 510K R19 33K C24 68P

FUNCTION SW PCB 2/2
4

2

P601 4P PLUG

1

INPUT

TR1 2SC1815 GR

1U(NP) 50V R81 510K R5 10K
1

5

4

3

2

1

1

2

3

1

2

3

INPUT PCB
A1 006P 9V R2 9.1K R4 510K

2

D15 1SS133T

R6 510K

2

1

R14 220

D1 1SS133T
1 2

R18 10K

2 1 3

8

C10 473 R3 22K C2 10U 25V GND R17 100K C9 122

D2 1SS133T C8 100P VCC

U3A NJM4558D

FRET0 R16 1K C25 153 R91 1K R27 33K D3 1SS133T
2 1

4

FRET1 FRET2 R83 82K
1 2

4

ZL1

EQ2

EQ3

CLEAN

OD

EQIN

CUT

OP-IN

C13 104
2 1 3 8

GND MIX R38 22K R84 33K D4 1SS133T C18 68P C54 471 C53 273

J4 DC9V IN
C

3 2 1

U1A NJM4558D

4

C45 0.22U 50V

R67 220

C15 333

R82 2.4K R77 2.4K

6 7 5

D7 1SS133T
1

C37 100U 25V

R59 10K 1/2VCC

C16 0.47U 63V
6 7 5

U3B NJM4558D

2

C

R40 3.9K

R28 3.9K

1

2

U2B NJM4558D C46 0.22U 50V 1/2VCC

C43 1U(NP) 50V R30 510K

C31 153

R60 10K

C38 100U 25V GND GND

R61 10K BOOST

R47 10K C30 100P R49 1K

VCC

R52 1.5K (HI) R56 18K U2A NJM4558D
2 1 3 8

R68 22K C48 1000P R69 1M
B

R88 56K C49 1000P R70 1M

EQ3 R62 10K C20 1U 50V R32 1K
2

4

C26 153 R41 1K C27 152

C28 473 R44 1.3K C29 562
2 2

C52 103

GND

B

2

R73 100K
3

R80 100K
3

C21 473 TR12 2SC1815 GR
2

2

1

D13 1SS133T

Q1 2SK118O

Q6 2SK118O OUTBUF

C40 473

R71 1M

TR11 2SC1815 GR

1

R89 56K

C41 102

C42 102

R74 100K

1

1

D9 LED
2

3

3

3

TR5 2SC1815 GR
3

TR8 2SC1815 GR R42 100K R43 10K

TR9 2SC1815 GR R45 100K R46 10K

1

1

1

1

VCC

1/2VCC

GND

3

2

1

2

1

2

3

4

SW3 FOOTSW
1

TR13 2SC1815 GR

J101 3P WIRE
1 2

1

1

2

3

4

D13 D14 C32 1U 50V C33 223 C35 1U(NP) 50V
1 2 3 2

FUNCTION SW PCB 1/2

J401 2P WIRE

(TO OUTPUT PCB J401)

TR10 2SC1815 GR
1

5

R50 220

P401 2P PLUG

5

1

D15

1/2VCC

2

R87 330K

C50 2000P

R90 22

R72 1M

VCC GND

C47 473

2

R33 100K

R34 10K

R66 220

D14 1SS133T

2

P701 5P PLUG

J701 5P SOCKET

J502

6

5

4

3

2

1

6

5

4

3

2

1

J501

R75 510K

R53 510K

R55 470

C36 10U 25V

3 2 1

J2

6

5

4

3

2

1

6

5

4

3

2

1

1

1

2

2

2

1

A

1

P502

P501

R54 10K

R58 100K

OUT1

A

2

VR4 100K(B)
3 3

3

3

VR2 20K(B)

VR3 20K(B)

VR1 500K(A)

(LEVEL)

(HI)

(LO)

(DRIVE)

OUTPUT PCB

VR PCB

~8~
8 7 6 5 4 3 2 1