The amplifier in this case is based upon the CMoy, a common headphone amp design. [ErikaFluff] added a MOSFET on the output to drive his relatively low impedance (32 ohm) Grado headphones with ...

Future work from [Jenny] will demonstrate using a MOSFET follower to achieve much the same result. We’ve seen a great number of headphone amplifiers over the years, including one particularly ...