Headphone amplifiers make for simple, practical electronics projects. The Bass Bump Headphone Amp is no exception, since it’s made out of easy to source parts, and can be built on a proto-board.

Initially, the project began as a headphone amplifier but morphed into a design specifically for guitar and bass, with preamp and power amp stages and adjustable input impedance – 500kΩ for ...

The bass separation is clear and powerful ... the Spark Neo is a compelling wireless headphone guitar amp solution for anyone who wants to play whenever and wherever without compromising volume ...