Preamp with built-in piezo-microphone and ext. jack

Inspired by Stockhausen and Tom Withwell I build this Preamp with some parts lying around.
A Documentation you can find here: http://musicthing.co.uk/modular/?page_id=973

• 5 mA +12V
• ? mA -12V
• ? mA 5V
• 25 mm Depth

Module is available as a DIY project only.

No info about availability.