Bill and Melinda Gates gave their kids a strict ‘middle-class' upbringing, refused to just 'buy them things' with their ...

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.

but it also packs a lot of bass for a 10-inch subwoofer. The woofer is a 10-inch front-firing spun-copper woofer, and it’s powered by an all-digital amplifier with 300 watts of peak power.