A feature-packed envelope module. The Behringer System 100 140 Dual Envelope offers two independent ADSR envelopes with responsive faders providing accurate control over envelope parameters. The LFO also features a waveform knob to easily select between sine triangle square ramp and sawtooth waveshapes. Frequency delay and range controls provide precise manipulation of the audio signal whilst an external sync input allows for easy integration with other modular systems. An external trigger switch also allows the user to phase lock the LFO to your keyboard playing. Each envelope features three separate outputs two normal and one inverted.