Parts:
P1_____________22K Log. Potentiometer (see Notes)
R1,R9__________10K 1/4W Resistors R2______________1M 1/4W Resistor R3______________4K7 1/4W Resistor R4,R7_________100K 1/4W Resistor R5______________3K9 1/4W Resistor R6______________1K5 1/4W Resistor R8_____________100R 1/4W Resistor
C1,C2_________100nF 63V Polyester or Ceramic Capacitors C3,C6___________1µF 63V Polyester or Ceramic Capacitors C4_____________10µF 25V Electrolytic Capacitor C5____________470µF 25V Electrolytic Capacitor
D1___________1N4148 75V 150mA Diode
Q1,Q2,Q3,_____BC547 45V 100mA NPN Transistors Q4____________BC337 45V 800mA NPN Transistor
MIC1__________Miniature electret microphone
SW1____________SPST Switch (Ganged with P1)
J1_____________Stereo 3mm. Jack socket
B1_____________1.5V Battery (AA or AAA cell etc.)
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