How-To: Build a Two-Person Portable Headphone Amp

Here’s a nifty little mint tin project. It’s an Altoids amp that splits the signal to two outputs, with independent volume controls. The builder has even etched a PCB and will send you a copy if you email him your Earthly coordinattes (till he runs out of boards or racks up a huge postage bill). This seems like a fun medium-level project for the electronics hobbiest.

[Via Make]