MOTM

>  I am confused about the
> function of the Bias switch on the MOTM-830 dual mode mixer.
> What does it mean that it sends DC voltage?

It adds a fied voltage to the output. So, if the inputs are all of (zero),
then you can view it as "sending" out a fixed DC voltage.

>  How do I use that?

Put the switch in the ON position :)

> What is it good for?

Some modules want 0 to +5V inputs (like resonance CVs on the filters).
What if you want to use the output of a LFO, that is -5V to +5 V?

Ponder and the answer will come.

Paul S.