Part

Designation

Quantity

Supplier

Part Number

Price

20k ohm

R1

1

.05

100k ohm

R2 - R10

2

.10

200 ohm

R3

1

.05

27k ohm

R4

1

.05

4.7k ohm

R5

1

.05

2.2k ohm

R6

1

.05

1k ohm

R7

1

.05

12k ohm

R8

1

.05

10k ohm

R9

1

.05

.1uf

C1 - C4  C7

5

.20

1M pot ohm

VR1

1

Mouser

72-T20XW

.76

100k ohm pot

VR2

1

Mouser

72-T20XH

.76

.47uf

C5

1

.40

.015uf

C6

1

.20

LF412

3

Digi-Key

LF412CN-ND

$4.50

LM311

1

Mouser

511-LM311N

.30

$7.62