(For Hybrid headphone amplifier)
Main print (one channel)
Resistors
R1 = 10K
R2 = 820
R3 = 270
R4 = 270K 0.5W
R5 = 1M
R6 = 220 0.5W
R7 = 10K
R8 = 1K8
R9 = 330 2W
R10 = 270 2W
Capacitors
C1 = 220µ / 10V
C2,C3,C5,C7,C8 = 220n / 400V FKP WIMA
C4 = 4700µ / 16V vertical
C6 = 25µ/75µ/200µ / 300V NSF
Semiconductors
T1 = BF423
T2 = BC560
D1 = B250C 1500/1000 600V
Tubes
V1 = ECC82 or ECC81 of ECC83 (see text)
V2 = EL84
Connectors
K1 = boxheader 16-pins
K2 = print connector; pin distance 5mm
Power supply (one section)
Resistors
R11 : a = 1.8; b = 2.2
R12 = 100 trim potmeter Bourns3006P / Beckman 90P
Capacitors
C9 = 10000µ / 16V
Semiconductors
IC1 = LM337
D2 = B40C 5000/3300 40V
Connectors
K3 = boxheader 16-pins
K4 = print connector; pin distance 5mm