the mg series of modules use fast-acting arcade style pushbuttons to switch a input signal between two outputs or select one output from two input signals. when nothing is plugged into the "input/output" jack, a gate signal appears alternatively at the "up" and "down" jacks when the pushbutton is pressed. when external signal is plugged into the "input/output" jack - this signal will appear alternatively at the "up" and "down" jacks instead of the gate. the two "up" and "down" leds show the active state of the jack and will show the signal level if a non-gate signal is used. if the module is used in the other direction, selecting from two sources such as two lfos, the leds will show previews of the two sources. the mg-1 also offers a 4-way multiple patch section along with the manual pushbutton. the module is 8hp in width.