Component List

Resistors

Unless otherwise specified:
 MELF 0204 or thin film SMD 1206, 1%

R1 = 47 Ω

R2, R5, R8, R9, R11, R15, R17, R18 = 3k3

R3 = 200 Ω, multi-turn trim pot, vertical, RM 1/10‘‘

R4 = 150 Ω

R6, R7, R10, R12, R16, R19 = 100 Ω*

R12, R16, R19 = 100 Ω

R13 = 10 k, potentiometer, linear

R14 = optional*

R20 = 820 Ω, SMD 0603

R21 = 100 Ω, SMD 0603

R22, R24, R26 = 56 kΩ, SMD 0603

R23, R35, R36 = 8k2, SMD 0603

R25 = 100 kΩ, multi-turn trim pot, vertical, RM 1/10‘‘

R27, R28 = 4k7, SMD 0603

R29, R30, R31, R32 = 10 kΩ, SMD 0603

R33 = 2k2, SMD 0603

R34 = 5k1, SMD 0603

Capacitors

C1, C6 = optional*, COG, SMD 0603

C2, C3, C8= 47 nF, film, RM 2/10‘‘ (alternative to C4, C5, C7)*

C4, C5, C7 = 47 n, COG, SMD0805 (alternative to C2, C3, C8)*

C9, C15, C17…C20, C22, C24…C27 = 100 nF, X7R, SMD 0603

C10, C11 = 22 µF / 16 V, SMD 1206

C12 = 2µ2 / 16 V, SMD 1206

C13 = 47 pF, COG, SMD 0603

C14, C16, C21, C23 = 22 µF / 25 V, Tantal Elko, SMC-B

Semiconductors

LED1, LED2 = LED, SMD 0805

D1, D2 = BAV199, SOT23

D3, D5 = 1N4004

D4, D6 = SK34, DO214AC

T1 = 2N3904, SOT23

IC1, IC3 = OPA2211*, SOIC8

IC2, IC4 = TL072, SOIC8

IC5 = 78L12, TO92

IC6 = 79L12, TO92

IC7 = NSL-32SR3*

VR1 = TL431, TO92

Miscellaneous

JP1, JP2 = 2-pin header, LP 1/10‘‘

JP12 = 4-pin header, LP 1/10‘‘

JP13 = 3-pin header, LP 1/10‘‘

Circuit board 230704-01

Knob for pot R13

Audio sockets*

* See text