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Headphone Amplifier

 

Amplifier parts:

P1_____________22K   Log.Potentiometer (Dual-gang for stereo)

R1____________560R 1/4W Resistor
R2,R3__________10K 1/4W Resistors
R4_____________12K 1/4W Resistor
R5,R6___________2R2 1/4W Resistor
R7_____________22R 1/2W Resistor

C1______________1µF 63V Polyester Capacitor
C2,C3,C4______100µF 25V Electrolytic Capacitors
C5_____________22pF 63V Polystyrene or Ceramic Capacitor
C6_____________22µF 25V Electrolytic Capacitor

IC1___________LM833 or NE5532 Low noise Dual Op-amp

Q1,Q3_________BC337 45V 800mA NPN Transistors
Q2,Q4_________BC327 45V 800mA PNP Transistors

J1______________RCA audio input socket 
 

Power supply parts:

 
 
 R8______________2K2  1/4W Resistor

C7,C8________2200µF 25V Electrolytic Capacitors

D1____________100V 1A Diode bridge
D2____________5mm. or 3mm. Red LED

IC2___________7815 15V 1A Positive voltage regulator IC
IC3___________7915 15V 1A Negative voltage regulator IC

T1____________220V Primary, 15 + 15V Secondary 5VA Mains transformer

PL1___________Male Mains plug

SW1___________SPST Mains switch

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