903A Random Signal Generator

Inject texture and unpredictability into your modular system with the Behringer 903A Random Signal Generator, an authentic recreation of the noise source from the historic Moog Modular 900 series. This compact and simple module is dedicated to one essential task: producing high-quality analog noise. Noise is a fundamental building block in synthesis, used for creating percussive sounds like snares and hi-hats, generating wind and surf effects, and as a source for random voltage generation when paired with a Sample & Hold module.

The 903A provides two of the most useful colors of noise: white noise and pink noise. White noise has equal energy across all frequencies, resulting in a bright, hissing sound. Pink noise has equal energy per octave, making it sound more balanced and less harsh, often described as having a "deeper" tone. The module provides two outputs for each noise color, allowing you to easily route these essential random signals to multiple destinations within your patch. Its all-analog design ensures the warm, organic character of classic vintage noise sources.

Features

• Authentic recreation of the Moog Modular 900 series 903A noise generator.
• Generates classic analog white and pink noise.
• Two outputs for each noise color for flexible routing.
• Essential for creating percussive sounds and atmospheric effects.
• Provides a random source for Sample & Hold modules.
• All-analog circuitry for a true vintage sound character.
• Compact and simple utility module.
• Eurorack-compatible design.