reference

value

number

U1,U2,U3,U4,U5,U6

TL074

6

R1,R2

10 ohm

2

R17,R18,R19,R27,R28,R29,R37,R38,R39

100 ohm

9

R6,R8

470 ohm

2

R4

4.7k

1

R3 
39k

1

R14,R16,R24,R26,R34,R36 
100K 0.1% (take a batch of
1% and select those within 0.1%)

6

R7

156K (a 180K in parallel
with a 1.2M)

1

R5,R12,R22,R32

180K

4

R10,R11,R13,R20,R21,R23,R30,R31,R33 
200K 0.1% (take a batch of
1% and select those within 0.1%) 
9

R15,R25,R35

1M

3

R9,R19,R29

3.3M

3

C5,C6,C7 
100nF 
3

C1,C2 
10µF or
22µF/35V electro. 
2

C3,C4

100µF/35V electro.

2

T11,T12,T13,T14,T14,T15,T16,T17,18,T19,T20

1K 10 (or 15 or 25) turn
trimmer 
10

T1,T2,T3,T4,T5,T6,T7,T8,T9,T10

10K 10 (or 15 or 25) turn
trimmer 
10

T21,T23,T25

47K 10 (or 15 or 25) turn
trimmer 
3

T22,T24,T26

220K 10 (or 15 or 25) turn
trimmer 
3

Jk1,Jk2,Jk3,Jk4,Jk5,Jk6,Jk7,Jk8,Jk9,Jk10,Jk11,Jk12

6,5 mm jack socket

12

