Evin 209 provides four different mixes of four signal inputs. Each output row can be switched between unipolar (zero to max) and bipolar (negative max to zero to positive max) mix behavior. The module is DC-coupled so that you may also mix control signals this way.
An expansion header is also provided on the rear of the module. It currently connects to a m'79 Stilton Adaptor for true Feedback Console operation (the inputs and outputs of each module are normalled together, so a complex mix of a four-pedal feedback loop can be finely tuned). This header will also allow expansion with any other Feedback Console devices to be designed, such as VCAs or envelope extractors."
YouTube via ripe909. Part 1. Part 2 "This is a short tutorial on building multiple clusters and automatically switching between them. This is useful for building song structures or moving between songs in a live performance. It may be a bit confusing for people who don't have an Octopus to follow some of the button-pressing ;)"
YouTube via Crashlander42. follow-up to these posts. "This is another example of the Scott Bernardi PT2399 VC echo. This is probably a better example of the module than my first video of it. I'm modulating the delay time with the wogglebug, which is clocked to midi."
"Very basic polyphonic organ with built in speaker. Has a really neat capacitive touch pitch bend plate that salvages an otherwise useless piece of gear. This one has been modified with an AC adapter."