Two voltage source’s outputs (at the top) provides voltages from 0 to 5V. This voltages are precise, buffered thru op-amp and are controllable by potentiometers. Each have a dedicated button-switch so the selected voltages can be applied precisely (for example applying it on filter’s cv’s, oscillator’s fm, delay’s cv, etc.) on one part of the sequence.
Beside manual cv modulation the voltage sources are also very useful in many applications where constant voltages are needed (to fix the same accent on drum module’s cv for ex., to tune an oscillator, or when using an external instruments who works on line level so much more quite than modular- once connected to a modular-you’ll need a constant voltage to keep the VCA permanently open so that the instrument can reach the modular’s level and you can hear it, use it normally, etc.)
The four grey button-switches (on the sides) are the simple manual gates and are momentary with no latency. They will send 5V as long as you keep them pressed (led indicated). You’ll use them to start manually an envelopes, play drum modules for eg as a drum pads, apply it on any other cv/gate input..
The three illuminated button-switches have inputs so they can be used to mute signals. The two on the bottom can stay maintained while the one in the middle is momentary – for the bigger flexibility of use. The button’s LEDs will indicate the signal going thru. You’ll use these switches to stop, mute one signal let go another one, break a sequence’s cv or gate with another one from the another switch, etc – all under your fingers! If nothing is plugged in the inputs of those switches they will output 5V cv-gates just like their neighbour buttons.