Octostages an eight voice fully analog envelope generator. Its typical use is to patch polyphonic synthesizers with the use of only a few single Polytip cables. Each of the eight envelopes feature a Gate in, Envelope OUT, Velocity CV in and Attack CV in control as well as an output led indicator. A master output level knob and CV using 3.5mm jack are provided to control or modulate all envelope output levels globally. To tap to each envelope in, out or CV using discrete modules the OCTO I/O module can be used as an expander. As there are eight EGs in the module special attention has been given for power consumption efficiency.