[Easily handles low or high impedance headphone]: For a total power output of up to 1.5 W under a 32Ω load, and up to 20Vpp at 300Ω, K5Pro ESS desktop amplifier can easily handles any low or ...
a common headphone amp design. [ErikaFluff] added a MOSFET on the output to drive his relatively low impedance (32 ohm) Grado headphones with reasonable volume. The CRT is from an old video camera ...