(EA Dec ‘96) Here's a high performance audio oscillator that is small enough to actually fit in your pocket! It's size belies its amazing performance, as it produces sine or square waves from 41Hz to 18kHz with low distortion (0.16% @ 1kHz), and has a maximum output level of around 1V rms.
Ideal for testing all sorts of audio gear, from speakers to amps or mixers, and is just the thing for on-site testing of audio systems! It can even be used to clock logic circuits on square wave. Powered by a 9V battery.
We have built this kit, check out John's review from his personal website.