Behringer 911 envelope generator Eurorack-module (14 HP)

In a compact Eurorack case, a sound designer patches a gate signal from a sequencer into the Behringer 911 Envelope Generator. With a twist of the Attack knob, the sound swells gradually; the Decay and Release controls shape the tail, while Sustain holds the level between notes. This module brings the classic ADSR response of the vintage Moog System 15/35/55 911 to modern modular setups, all in 14 HP.

Key specifications

• Module type: Envelope Generator
• Format: Eurorack
• Circuitry: Analog
• Envelope type: ADSR (Attack, Decay, Sustain, Release)
• Number of envelopes: 1
• Inputs: 1x Gate In (3.5mm TS), 1x Trigger In (3.5mm TS)
• Outputs: 1x Envelope Out (3.5mm TS)
• Output voltage range: 0 to +10 V
• Controls: Attack Time, Decay Time, Sustain Level, Release Time (4 knobs)
• Module width: 14 HP
• Module depth: 43 mm
• Power consumption: +12V: 20 mA, -12V: 10 mA
• Original circuit emulation: Moog System 15/35/55 911 Envelope Generator
• Compatibility: Standard Eurorack cases and power supplies

Why choose it

The Behringer 911 delivers the iconic response of a legendary synthesizer envelope generator in a Eurorack-friendly format. Its all-analog signal path ensures warm, organic modulation, while the straightforward knob-per-function layout makes it easy to dial in precise envelope shapes. Whether shaping filter cutoff, amplifier level, or other parameters, this module provides the control and character that modular enthusiasts demand.

Ideal use cases

• Shaping amplitude envelopes for VCA modules
• Modulating filter cutoff for dynamic timbral changes
• Creating classic synth sounds with vintage Moog character
• Integrating into Eurorack systems for modular synthesis

Good to know

The module is designed to fit standard Eurorack cases and power supplies, ensuring seamless integration into your existing setup. With a depth of 43 mm, it is suitable for most skiff-friendly cases. The original Moog 911 circuit emulation provides authentic envelope behavior, making it a valuable addition for both vintage synth enthusiasts and modern modular performers.