Schematic of PREAMP
R3
Resistance
10000 Ω
MK4
J1
MK2
R5
Resistance
330 Ω
MK3
R4
Resistance
10000 Ω
R1
Resistance
10000 Ω
MK1
R6
Resistance
330 Ω
R2
Resistance
10000 Ω
U1
B1
VR1
C2
Capacitance
10uF
C4
Capacitance
10uF
C3
Capacitance
10uF
C1
Capacitance
10uF