Eurorack voltage processor / ring modulator inspired by the Buchla 257.
Features:
- Two independent channels, each mixing an attenuverter, a voltage-controlled crossfader and an offset voltage (0-5V).
- „Ring” switches turn the crossfaders into ring modulators / bipolar VCAs.
- S-curve attenuverters for easier nulling.
- Can be trimmed precisely for 1V/oct signals
- LEDs indicating negative/positive voltage.
Other notes:
- Crossfader expects a 0-8V envelope in regular mode.
- Turning on the ring switch normalizes an inverted copy of the inputs into each other. This allows the crossfader to be used as a second attenuverter, a bipolar VCA or a ring modulator with adjustable bias without any additonal patching.
- 11 HP, compact design
- Panel + PCB sandwich, suitable for skiffs
- Reverse polarity protection
- Open source
