Headphone Audio Amplifier Power supply can use a 9V battery. Output Headphone Amplifier can be connected with a 32 or 64 ohm headphones.
Parts list : R1 : 100K R2 : 47 ohm R3 : 4,7K C1 :0.47uF C2, C3 : 470uF VR1 : 50K Transistor : 2N3565 and 2N3706
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