Behringer 921 Voltage Controlled Oscillator Eurorack Module
Behringer 921 Voltage Controlled Oscillator is an analog oscillator module designed for Eurorack modular synthesizer systems. It enables voltage controlled waveform generation for modular users, supporting tone creation and modulation workflows within modular signal chains. This makes it ideal for Eurorack setups where oscillator sources are required for both audio generation and modulation.
The module operates as a voltage controlled oscillator with multiple selectable waveform outputs and control voltage inputs. It provides waveform selection, pulse width modulation control, and switchable operating modes for integration with modular patching environments.
Within a modular system, it can function as a primary audio oscillator or as a low frequency oscillator for modulation duties. Its multiple outputs and control inputs support routing to filters, amplifiers, and other modules within complex modular patches.
Key Features
- Analog Voltage Controlled Oscillator: Eurorack oscillator module designed for modular synthesizer systems
- Vintage Modular Circuitry: Reproduction of circuitry from classic Modular 55, 35, and 15 systems
- Six Selectable Waveforms: Sine, triangle, saw, inverted saw, square, and inverted square outputs
- Pulse Width Modulation: Adjustable pulse width with two dedicated control voltage inputs
- Audio and Sub Audio Modes: Switchable operation for audio frequency or low frequency modulation
- Multiple CV Inputs: Five control voltage inputs for pitch and modulation control
- Multiple Audio Outputs: Six dedicated waveform outputs for flexible patch routing
- Front Panel Controls: Eight controls and switches for real time parameter adjustment
- Eurorack Compatibility: Designed for standard Eurorack systems with fourteen HP module width
Technical Specifications
Module Type
Analog voltage controlled oscillator module
Waveforms
Sine
Triangle
Saw
Inverted saw
Square
Inverted square
Operating Modes
Sub audio mode (LFO)
Audio mode (VCO)
Control Voltage Inputs
Five CV inputs for oscillator control
Trigger Inputs
Two trigger inputs
Audio Outputs
Six waveform outputs
Controls
Frequency control
Range control
Pulse width control
Additional modulation controls and switches
Power
Power supply: Eurorack
Current draw: 50 mA (+12 V), 50 mA (-12 V)
Rack units
14 HP
