Component Designator Number of same value Value
C1,C3,C7,C9,C11,C16,C19

7

.1uF (ceramic)
C2

1

100uF (16v electrolytic)
C4,C8

0

not used
C5

1

220pF (mica or metallized film)
C6

1

2200pF (mica or metallized film)
C10

1

.001uF (2% polypropylene)
C12,C13

2

.01uF (metallized film)
C14,C15

2

.001uF (metallized film)
C17

1

.05uF (ceramic)
C18

1

270uF (16v electrolytic)
C20

1

1uF (35v tantalum)
     
D1 (photodiode)

1

API PDB-C142 (Digikey PDB-C142-nd)
D2

1

1N914
J1

1

1/8" Stereo phone jack
L1

1

4.7 mH (molded choke)
Q1

1

2N2222
     
R1,R12

2

1k (resistors 5% 1/4-w except where ind.)
R2

1

470 Ohms
R3

0

not used
R4

1

2.2k
R5

1

820k
R6,R10

2

33k
R7,R8,R15,R16

4

100k
R9

1

9.53k (1% 1/4-watt)
R11,R13,R14,R19,R20

5

10k 
R17

1

39k
R18

1

10 Ohms
     
U1

1

LF347 (Quad JFET opamp)
U2

1

CD4069 (Hex CMOS inverter)
U3

1

CD4013 (Dual CMOS D flip-flop
U4

1

LM386-4 (Audio amp.)
     
VR1 (Volume)

1

10k (audio taper)