Vintage-classic ADSR Envelope Generator An authentic reproduction of the original ADSR unit from a legendary modular synthesizer system, the Behringer 911 Envelope Generator Eurorack module is a powerful sound-sculpting tool. Laid out in a standard ADSR configuration, the 911 Envelope Generator provides wide-ranging time intervals from 2ms up to 10 seconds, for tight snares and bursts, snappy pitched percussion sounds, epic stabs, and long, liquid drones. When building a Eurorack synthesizer, having an excellent envelope generator is essential. Whether you're using it with other Behringer System 55 modules or third-part modules, the 911 Envelope Generator from Sweetwater is a stellar choice to add to your Eurorack arsenal.Behringer 911 Envelope Generator Features: Reproduction of an iconic 1970s envelope generator module Works with Behringer System 55 Modules and third-party units Standard ADSR configuration Wide-ranging time intervals from 2ms to 10s 8HP Eurorack module