This is the 1W stereo headphone amplifier circuit. The circuit can be used for portable player devices, radios, computers and other device which use headphone as the output. A 3V supply can be used to drive headphones providing 20mW in 32 Ohms per channel, and a 9V supply will provide 1W in 8 Ohm per channel for small loudspeakers. Do not use 9V power supply for headphone output.
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