BMC21. Full Wave Dual Rectifier
This is an all analog synthesizer module used to alter the timbre and create new harmonic content. It consists of two identical full-wave rectification circuits. The circuit is normalized to have the output of channel 1 feed into channel 2.
Here is a youtube video demonstrating the module.
WIDTH = 6HP
DEPTH = 45MM
CURRENT DRAW = 5ma.
PRICE = $75.00
There are currently 5 available. Parts of construction are done by hand, your unit may not look exactly like the unit pictured.
You could definitely build this yourself! PCBs are available for DIYers.