This doesn't match the Buchla format width, so it seems you meant to add this elsewhere...
DIY Serge Dual Chime module. One of the chime has frontpanel tuning of the individual 3 sound sources
Module is available as a DIY project only.
No info about availability.$112 submitted Jun 3rd 2016, 19:08 by Tubefund | last Change Jun 7th 2016, 23:08 by KNYST