Adds pitch CVs for ondes Martenot

Precision adder (low offset, high input impedance, low drift) for pitch CVs. Either keyboard or ribbon is selected; if keyboard, then keyboard shake is also added in. Four buffered outputs without 1k resistors.

• 30 mA +12V
• 30 mA -12V
• ? mA 5V
• 40 mm Depth

No info about availability.