Headphone Amplifier

Can be directly connected to CD players, tuners and tape recorders. Tested with several headphone models of different impedance: 32, 100, 245, 300, 600 & 2000 Ohm. Schematic shows left channel only.
Headphone Amplifier - schematic

# B1, SW1, J1 & C3 are common to both channels. # R3 value was calculated for headphone impedance up to 300 Ohm. Using 600 Ohm loads or higher, change R3 value to 100K. # An interesting upgrade for this circuit was suggested by Mike Baum, NY USA. Th

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