> Speaking of being *very* useful, what is this thing exactly Just a
> precise mixer intended for CV What is the main application Adding
> pitch modulation to a keyboard CV
>
> Thanks,
> Doug

The main application is to generate a common (and buffered) control voltage
that is used to control several VCOs with the same CV e.g. via the internal
CV bus. If you want to control e.g. three or four VCOs with a sequencer CV
plus keyboard CV (e.g. for transposition of the sequence), add a little bit
of modulation and/or pitch bend you need a adder that generates one common
CV for all VCOs. For each of the voltages a switch is available to turn the
CV in question on/off/inverted. In addition the module can be used as an
octave switch for all VCOs connected to the bus.

Best wishes
Dieter Doepfer