Valve headphone Amplifier
EL84 (6BQ5) at an anode voltage of 40 V
Materials
Gerber file
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Component list
R1,R3,R5,R7 = 1k?
R2,R6 = 100?
R4,R8 = 220k?
P1 = 100k? stereo logarithmic
potentiometer
Capacitors:
C1,C2 = 100nF
C3,C5 = 100µF 10V radial
C4,C6 = 10µF 63V radial
C7 = 100µF 63V radial
Valves:
B1,B2 = EL84 or 6BQ5 with noval socket (18mm diam.)
Inductors:
L1,L2 = 330mH choke (Toko 10RBH 239LY334K)
Miscellaneous:
JP1-JP4 = 2-way pinheader with jumper
K1 = 3-way PCB terminal block, 5mm lead pitch
K= 2- way PCB terminal block, 5mm lead pitch
TR1,TR2 = mains transformer 18V/4.8VA (Gerth # 421.18)
PCBs, order code 030064-1 and 030064-2
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