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NIVIEM RM01

Classic Oberheim Ring Modulator

Inspired by the legendary Oberheim RM-1B Ring Modulator (1972). True MC1495 Four-Quadrant Multiplier emulation with 741 Wien Bridge Oscillator, vintage character, and modern enhancements like tempo sync and stereo modes.

$35
Save 30%Intro Price (30% Off)
Regular $50
ManualQuick Start
Version
1.0.0
Released
May 2026
Formats
VST3, Audio Units
Platforms
macOS, Windows
Features

What Makes It Special

MC1495 Four-Quadrant Multiplier

Authentic Gilbert Cell topology with soft tanh saturation and ADAA antialiasing. Adjustable carrier and signal feedthrough model imperfect null adjustment found in real units.

741 Wien Bridge Oscillator

Classic analog oscillator with 1N746 zener diode harmonic distortion. PolyBLEP/PolyBLAMP bandlimited waveforms. Kahan summation ensures < 0.001° drift over 24 hours.

Linear Squelch

The RM-1B's LINEAR SQUELCH circuit, reproduced as a per-channel envelope follower that attenuates the output as the input falls quiet — taming the ring-mod tail on soft passages without a gate's breathing artefacts.

Vintage Character

Component tolerance variation modeling. Each instance can sound like a different vintage unit. Oscillator drift adds analog instability.

Four Stereo Modes

Dual Mono (authentic mono fold copied to both channels), True Stereo (an independent free-running right-channel carrier for a decorrelated image), Mid/Side (ring-modulates the centre, leaves the sides dry), and Mono (a strict L+R sum fold).

Tempo Sync

Lock carrier pitch to host tempo across thirteen note divisions — from 1/1 down to 1/128, including triplets — for grid-locked rhythmic chopping and musically timed pulses.

Specifications

Inspired ByOberheim RM-1B Ring Modulator (1972)
Units Built (Original)~500-1000 (estimated)
Multiplier TopologyMC1495 Gilbert Cell (Four-Quadrant)
Oscillator741 Wien Bridge with 1N746 zener limiting
Carrier Frequency0.1 Hz – 10,000 Hz
WaveformsSine, Triangle
Tempo Sync13 divisions, 1/1 to 1/128 (incl. triplets)
Stereo ModesDual Mono / True Stereo / Mid-Side / Mono
Carrier Feedthrough0-10% adjustable
Signal Feedthrough0-10% adjustable
OversamplingOff (1×) to Ultra (16×)
Saturationtanh(x) with first-order ADAA
Sample Rates44.1 kHz – 192 kHz

Highlights

  • Oberheim RM-1B (1972) — iconic ring modulator used by Herbie Hancock, Joe Zawinul, BBC
  • True MC1495 Gilbert Cell multiplication with asymmetric per-axis saturation
  • 741 Wien Bridge oscillator with zener harmonic distortion
  • Linear Squelch: tames the ring-mod tail on quiet passages
  • Vintage Variation: component tolerance modeling for analog character
  • Four stereo modes: Dual Mono, True Stereo, Mid/Side, Mono
  • Tempo sync: 13 note divisions from 1/1 to 1/128, including triplets
  • 5 oversampling levels (1× to 16×) with ADAA antialiasing
  • Pickup simulation: Single Coil, Humbucker, P90
  • 35 factory presets across 11 categories, including the famous 'Dalek Voice'

Under the Hood

Gilbert Cell: Vout = K · tanh(Vx/Vsat_X) · tanh(Vy/Vsat_Y) · Vsat²
ADAA waveshaping: y[n] = (F1(x[n]) - F1(x[n-1])) / (x[n] - x[n-1])
Kahan compensated summation for phase accuracy
PolyBLEP/PolyBLAMP bandlimited waveforms
5 Hz TPT DC blocking filter
Pre-allocated oversamplers for glitch-free quality switching
True Peak + RMS metering with Catmull-Rom interpolation

System Requirements

macOS

  • macOS 11.0 (Big Sur) or later
  • Intel or Apple Silicon (Universal Binary)
  • AU or VST3 compatible host

Windows

  • Windows 10 or later (64-bit)
  • VST3 compatible host