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Behringer Model D Analog Synthesizer with Ladder-Style Filter – Eurorack Compatible


 Behringer Model D is a three-oscillator analog synthesizer with a pure analog signal path and a dedicated and fully analog triangle/square wave LFO. The instrument utilizes matched transistors and JFETs, precision 0.1% thin-film resistors, and polyphenylene-sulfide capacitors, which allow for flexible sound shaping capabilities, resulting in super-fat basses and lead tones, mind-bending effects, and progressive organ sounds.

The three VCOs offer a wide range of waveforms for sculpting sound. VCOs 1&2 include triangular, triangular/saw, saw, square, wide pulse, and narrow pulse, while VCO3 features triangular, reverse saw, saw, square, wide pulse, and narrow pulse. Additionally, all 3 VCOs can be adjusted across a wide, 6-octave range (LO, 32′, 16′, 8′, 4′, and 2′). At the heart of the Model D beats the highly flexible 24 dB ladder-style filter with controls for filter cutoff, emphasis, and contour. The filter can be switched between high-pass and low-pass, while the dedicated envelope allows the filter to be shaped over time. What’s more, the filter can be key-tracked for realistic recreations of acoustic instruments.

Other notable additions to the Model D include a semi-modular design, which requires no patching for immediate performance. However, many of the instrument’s audio and CV input and outputs can be routed via 1/8″ patch cables to interface with other Eurorack modules. The front panel can be removed from the desktop case and placed within a standard Eurorack enclosure. The monophonic Model D is capable of up to 16-note poly-chaining, allowing multiple units to be connected and used polyphonically. The Behringer Model D includes a power adapter.

  • Classic analog synthesizer with triple VCO design allows for insanely fat music creation
  • Authentic reproduction of original “D Type” circuitry with matched transistors and JFETs
  • Precision 0.1% thin-film resistors and polyphenylene sulfide capacitors
  • Pure analog signal path based on authentic VCO, VCF, and VCA designs
  • Five variable oscillator shapes with variable pulse widths for ultimate sounds
  • Classic 24 dB ladder filter with resonance for authentic sound performance
  • Switchable low-/high-pass filter mode for enhanced sound creation
  • Dedicated and fully analog triangle/square wave LFO
  • 16-voice poly-chain allows combining multiple synthesizers for up to 16-voice polyphony
  • Semi-modular design requires no patching for immediate performance
  • Overdrive circuit adds spice and edge to your sounds
  • Noise generator dramatically expands waveform generation
  • Complete Eurorack solution: main module can be transferred to a standard Eurorack case
  • 48 controls give you direct and real-time access to all important parameters
  • External audio input for processing external sound sources
  • Low- and high-level outputs featuring highest signal integrity signal stages
  • Comprehensive MIDI implementation with MIDI channel and Voice Priority selection
 UPC: 653341317032


Synthesizer Structure Number of Voices: Monophonic
Type: Analog
VCO: 3 x voltage-controlled oscillators (0.1 Hz to 20 kHz in 6 overlapping ranges)
LFO: 1 x low-frequency oscillator (0.05 Hz to 200 Hz, up to 300 Hz with external CV input)
VCF: 1 x voltage-controlled filter, switchable low-pass or high-pass (24 dB/octave slope)
Envelopes: VCA, VCF
Line Inputs and Outputs High Output: 1/4″ / 6.3 mm TS, unbalanced, maximum 0 dBu
High Output Impedance: 1.2 kOhms
Low Output: 1/4″ / 6.3 mm TS, unbalanced, 30 dB below high output
Low Output Impedance: 1 kOhms
Headphones: 1/8″ / 3.5 mm TRS, unbalanced, maximum -3.5 dBu
Headphones Output Impedance: 8 Ohms
Control Voltage Inputs: 1/8″ / 3.5 mm (TS)
Modulation Source: Noise is the modulation source if there is no connection present
Oscillator 1: 1 V per octave
LFO: -5 V to +5 V
External Input Impedance: 1 MOhm
Cutoff Frequency: 0 to +5 V controls the cutoff frequency
Loudness: 0 to +5 V controls the loudness
Filter Contour: +5 V gate input triggers the filter contour
Loudness Contour +5 V gate input triggers the loudness contourOutputs: 1/8″ / 3.5 mm (TS)
LFO Triangular Waveform: +/- 2 V
LFO Square Waveform: +/- 2 V
Mixer Output: 0 dBu maximum
Filter Contour: 0 to +4 V
Loudness Contour: 0 to +4.6 V
Main Audio Output: 0 dBu maximum
USB Type: Class-compliant USB 2.0, Type-B
Supported Operating Systems:
Windows XP or higher
macOS 10.6.8 or higher
MIDI Connectors In/Thru: 2 x 5-pin DIN
Controllers Knobs
Tune: -2 to +2
Glide: 0 to 10
Modulation Mix: OSC 3 or filter EG to noise/ext mod source or LFO
Modulation Depth: 0 to 10
LFO Rate: 0 to 10Switches
Modulation Source: OSC 3 or filter EG
Modulation Source: Noise or external modulation source or LFO
LFO Waveform: Triangular or square
Oscillators Knobs Range (OSC 1, 2, and 3): LO, 32′, 16′, 8′, 4′, 2′ Frequency (OSC 2 and 3): -7 to +7
Waveform (OSC 1 and 2): Triangular, triangular/saw, saw, square, wide pulse, narrow pulse
Waveform (OSC 3): Triangular, reverse saw, saw, square, wide pulse, narrow pulse
Switches: Oscillator modulation on/off
OSC 3 control (by keyboard) on/off
Mixer Section Knobs
Volume (OSC 1, 2, and 3): 0 to 10
Volume (External Input): 0 to 10
Volume (Noise): 0 to 10Switches
OSC 1, 2, and 3: On/off
External Input: On/off
Noise: On/off
Noise Source: Pink or whiteLED: Overload
Filter Knobs
Cutoff Frequency: -4 to +4
Filter Emphasis: 0 to 10
Amount of Contour: 0 to 10
Attack: 1 ms to 10 s
Decay: 4 ms to >35 s
Sustain: 0 to 10Switches
Filter Mode: Low-pass/high-pass
Filter Modulation: On/off
Keyboard Control 1: On (1/3) or off
Keyboard Control 2: On (2/3) or off
Filter Decay: On/off
Output Loudness Contour Dynamic Range: 80 dB

Volume: 0 to 10
Headphone Volume: 0 to 10
Amount of Contour: 0 to 10
Attack: 1 ms to 10 s
Decay: 4 ms to >35 s
Sustain: 0 to 10

Main Output: On/off
A-440: On/off
Loudness Decay: On/off

LED: Power

Operating Temperature Range 41 to 104°F / 5 to 40°C
Power External Power Adapter: 12 VDC, 1000 mA
Power Consumption: 7 W maximum
Dimensions (H x W x D) 3.5 x 14.7 x 5.4″ / 90 x 374 x 136 mm
Weight 3.7 lb / 1.7 kg
Packaging Info
Package Weight 5.215 lb
Box Dimensions (LxWxH) 19.35 x 7.45 x 5.1″

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