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Headphone Amplifier from Sheldon Stokes

Headphone Amplifier from SDS Labs

This little headphone amp from Sheldon Stokes uses a push-pull Class A MOSFET output stage, being driven by an op-amp. The output stage is included in the op-amp feedback loop, so the distortion figures are amazingly low. The power supply uses a 25 watt torroid transformer, and two adjustable regulators. It sounds very good; surprisingly un-solid state. Included with the PDF file are the schematics and the PWB layout drawings.

Headphone Amplifier Schematics

Reprinted by permission from Sheldon D. Stokes

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