The Behringer 150 is a spot-on analog clone of the Roland System 100M 150 module from the early 1980s. This 16 HP multitool combines a classic ring modulator for metallic/bell-like tones, dual white/pink noise sources, a sample & hold circuit with internal clock and lag smoothing, and a flexible LFO identical to the one in the 140—complete with five waveforms, delay/fade-in, three frequency ranges, CV control, and trigger sync. It’s the ultimate utility for adding random voltages, sci-fi effects, modulation madness, and noise textures to any Eurorack patch.
Technical Specifications
| Item | Description |
|---|---|
| Type | Legendary Analog Ring Modulator/Noise/S&H/LFO Eurorack Module |
| Eurorack Width | 16 HP |
| Depth | 44 mm (1.73″) |
| Weight | Approx. 0.16 kg (0.35 lbs) |
| Power Requirements | Eurorack bus (10-pin or 16-pin connector) |
| Current Draw | +12 V: 60 mA, –12 V: 50 mA, +5 V: 0 mA |
| Ring Modulator | |
| Inputs | 2 × 3.5 mm TS (EXT SIG X/NOISE & EXT SIG Y/LFO), 100 kΩ unbalanced, max +20 dBu |
| Output | 1 × 3.5 mm TS (R.M OUT), impedance ~1 kΩ, typical output level ~0 dBu to +15 dBu |
| Noise Generator | |
| Outputs | 2 × White Noise (simultaneous), 2 × Pink Noise (simultaneous), 3.5 mm TS, 1 kΩ unbalanced, output level ~0 dBu |
| Sample & Hold (S&H) | |
| Input | 1 × 3.5 mm TS (EXT SIG), 100 kΩ unbalanced, max +17 dBu |
| Clock | Internal via CLOCK RATE slider (2 Hz – 25 Hz); external via EXT CLOCK IN (1 × 3.5 mm TS, 1 kΩ unbalanced) |
| Controls | CLOCK RATE slider, LAG TIME slider (0 – 8 seconds smoothing/glide), EXT/LFO/NOISE 3-way switch |
| Outputs | 1 × S&H OUT (3.5 mm TS), CLOCK OUT (3.5 mm TS) |
| LFO | |
| Waveforms | Sine, Triangle, Square, Ramp (up), Sawtooth (down/inverted) |
| Frequency Ranges | 3-way switch: Low (~0.03 Hz – few Hz), Mid, High (up to ~30 Hz) |
| Controls | FREQ slider, DELAY slider (4 ms – 8 seconds fade-in), OUTPUT LEVEL switch (×1 / ×1/10) |
| Inputs | FREQ CV IN (1 × 3.5 mm TS, 100 kΩ unbalanced, 0 V to +10 V), TRIGGER IN (1 × 3.5 mm TS, resets phase) |
| Outputs | 2 × LFO OUT (3.5 mm TS, 1 kΩ unbalanced, selectable 1 V p-p or 10 V p-p) |
| Additional I/O | |
| Total Patch Points | Multiple ins/outs per section (ring mod: 3, noise: 4 outs, S&H: 4, LFO: 4) |
| LEDs | None (classic 100M minimalist design) |
Key Features & Signal Flow
- Ring Modulator – Multiply two signals (e.g., oscillator + LFO/noise) for metallic, inharmonic, bell-like, or robotic tones; patch audio or CV for wild effects.
- Dual Noise Sources – Simultaneous white and pink noise with two outputs each—great for percussion, textures, or random modulation without hogging other modules.
- Sample & Hold – Sample incoming signals (noise, LFO, external audio/CV) on internal/external clock; lag control smooths steps into portamento/glide—classic random voltages or stepped modulation.
- Powerful LFO – Same design as the 140: five waveshapes, wide range with three bands, delay for fade-in swells, trigger sync/reset, CV over frequency, and scaled outputs—versatile for everything from slow filter sweeps to audio-rate FM.
- All-in-one utility beast – No normalisation; fully patchable—route noise to S&H for random CV, LFO to ring mod carrier, S&H to filter cutoff, etc.
- Classic System 100M vibe – Authentic analog grit and versatility in a tiny, affordable package—essential for experimental patches, sci-fi leads, chaotic rhythms, or subtle modulation.
Resources
- Official Behringer product page: https://www.behringer.com/product.html?modelCode=0720-AAI
- Quick Start Guide (PDF): Available on Behringer downloads or direct mirrors like https://notebook.zoeblade.com/Downloads/Documentation/Behringer/150_Ring_Mod_Noise_S-H_LFO_quick_start_guide.pdf
- ModularGrid page: https://modulargrid.net/e/behringer-system-100-150-ring-mod-noise-s-h-lfo
- Retailer pages (Sweetwater, Thomann, Perfect Circuit, B&H Photo): Specs, user reviews, demo videos, and patch examples
- Demo videos: Search YouTube for “Behringer 150 Ring Mod Noise S&H LFO” (sound demos, ring mod madness, S&H random patches)
The Behringer 150 is a compact Swiss Army knife for modulation and effects—delivering vintage Roland utility with ring mod weirdness, noise chaos, stepped randomness, and smooth LFO animation at a bargain price. A must-have for any System 100 clone or experimental modular setup. Highly recommended!
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