The A-119 is designed to allow external audio signals to be integrated into the A-100 system.
It comprises a pre-amp, envelope follower and a comparator.
The pre-amp has two inputs:
an unbalanced input for line level signals with a gain factor from 0 to 10
and a balanced input with a gain factor from 0 to 500 for use with low level signals from a microphone or electric guitar.
The Envelope Follower reads the signal level 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 LED’s help you keep track of overload, the envelope and the gate signal.
