No info about availability.
4 x 4 Preset Voltages
PV44 lets you select between 4 groups of 4 voltages via prioritized trigger inputs.
1V, 2V, or 4V range for the upper rows, +5V and ±5V for the lower rows.
Common modulation input with an attenuverter per row.
The 4 trigger signals also go to an OR logic gate, which proves to be handy when using PV44 with percussion synthesizers or envelope generators.
A 3HP individual modulation inputs expansion is available.
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These merchants probably sell this module. Huh?