The A-119 has two different audio inputs: an unbalanced with 1/8" socket and a amplification 0-20 for line levels as well as a balanced one with 1/4" socket, amplification factor 0-500, primarily intended for microphones and guitars or other instruments.
The Envelope Follower reads the signal level of the input, and puts out a proportional voltage as an envelope at it's own output.
The comparator generates a gate signal whenever the input goes above an adjustable trigger threshold.
Three LEDs help you keep track of overload, the envelope, and the gate signal.
unbalanced input (1/8"), balanced input (1/4")
2x preamplified audio output
envelope follower output, gate output
3U Eurorack module, 8HP wide, 45mm deep
30mA current draw