The 911 ENVELOPE GENERATOR shapes how a sound evolves over time, controlling its attack, decay and release within a Eurorack patch. As one of the fundamental building blocks of modular synthesis, it’s essential for turning a static oscillator tone into an expressive, dynamic sound. The 911 ENVELOPE GENERATOR is a must-have utility module for any patch-based modular rig. Vintage-sounding 911 ADSR module from the ’70s Authentic reproduction of the circuitry from the “Modular 55, 35 and 15” Series Artist roster includes world’s most famous pop, rock and jazz musicians Trigger in and CV out connectors for integration with your other modules 4 independent controls for T1 (attack), T2 (decay), T3 (release) and sustain provide full control of envelope signal Time intervals from 2 milliseconds to 10 seconds allow for both snappy percussive sounds and evolving drones Eurorack specs: 8HP, 30mA +12V, 30mA -12V