Behringer POLY D 4-Voice Polyphonic Analog Synthesizer with Ladder-Style Filter


Behringer Poly D



Designed for the musician, producer, or sound designer looking for that classic ladder-filter sound of the 70’s, the Behringer Poly D is a quad-voice polyphonic, four-oscillator powerhouse with a pure analog signal path, 37-note full-sized semi-weighted keyboard, and built-in distortion and chorus effects. The synthesizer 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 Poly D offers a wide range of playable modes including mono, unison, and poly.

The four VCOs offer a wide range of waveforms for sculpting sound. VCOs 1, 2, and 3 include triangular, sharktooth, saw, square, wide pulse, and narrow pulse, while VCO4 features triangle, reverse saw, saw, square, wide pulse, and narrow pulse. Additionally, all 4 VCOs can be adjusted across a wide, 6-octave range (LO, 32′, 16′, 8′, 4′, and 2′). At the heart of the Poly 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 Poly D include an arpeggiator with 8 patterns, a 32-step sequencer with 64 memory locations, two types of analog chorus, and an analog distortion circuit to add spice and edge to your sounds. The rear panel provides stereo 1/4″ main outputs, a 1/4″ external input for processing, and a variety of 1/4″ CV inputs and outputs to add additional control over the instrument. Route the velocity to the VCA or Filter for expressive playing or interface with other external analog CV gear for even more sound design potential. The Behringer Poly D includes a power adapter.

  • Analog synthesizer with quadruple VCO design allows for fat music creation
  • 4-Voice polyphonic/paraphonic design with mono, unison and polyphonic mode
  • 37 semi-weighted full-size keys featuring velocity and after-touch functionality
  • Authentic reproduction of original D-type circuitry with matched transistors and JFETs
  • Ultra-high precision 0.1% thin film resistors and polyphenyline sulphide capacitors
  • Pure analog signal path based on authentic VCO, VCF, and VCA designs
  • 5 variable oscillator shapes with variable pulse widths for ultimate sounds
  • Classic 24 dB ladder filter with resonance for legendary sound performance
  • Amazing stereo chorus based on authentic circuitry
  • Distortion circuitry adds insane spice and edge to your sounds
  • Easy-to-use voltage controlled 32-step sequencer with 64 sequence locations
  • Arpeggiator with wide patterns for great sound effects
  • Switchable low/high pass filter mode for enhanced sound creation
  • Dedicated and fully analog triangle/square wave LFO
  • Noise generator dramatically expands waveform generation
  • 84 controls give you direct and real-time access to all important parameters
  • External audio input for processing external sound sources
  • Stereo outputs featuring servo-balanced output stages for highest signal integrity
  • Comprehensive MIDI implementation with MIDI channel and Voice Priority selection

UPC: 644216624102

Categories: ,
Weight 27 lbs
Dimensions 32 × 20 × 7 in
Synthesizer Structure Number of Voices: 4-Note Polyphony (with Paraphonic Mode)
Type: Analog
Modes: Mono, Unison, Poly
VCO: 4 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
FX: Distortion, Chorus
Keyboard 37-Note Full-Sized Keys
Synth-Action with Aftertouch
Line Inputs and Outputs Main Output: 2 x 1/4″ / 6.35 mm TRS
External Input: 1 x 1/4″ / 6.35 mm
Headphones: 1/4″ / 6.35 mm TRS
Control Voltage External Control Inputs: 1/4″ / 6.35 mm
Mod Source
External V-Trigger

Internal Control Outputs: 1/4″ / 6.35 mm
After-Pressure with Scale Knob
Velocity with Scale Knob

USB Type: Class-Compliant USB 2.0 Type-B
Supported Operating Systems:
Windows XP or Later
macOS 10.6.8 or Later
MIDI Connectors In/Out/Thru: 3 x 5-pin DIN
Controllers Knobs
Tune: -2 to +2
Glide: 0 to 10
Modulation Mix: OSC 4 or Filter EG to Noise/Ext Mod Source or LFO
Modulation Wheel
Pitch Wheel
LFO Rate: 0 to 10

Modulation Source: OSC 4 or Filter EG
Modulation Source: Noise/Ext Mod Source or LFO
LFO Waveform: Triangular or Square

Oscillators Knobs Range (OSC 1, 2, 3, and 4): LO, 32′, 16′, 8′, 4′, 2′
Frequency (OSC 2, 3, & 4): -7 to +7
Waveform (OSC 1, 2, 3): Triangular, Sharktooth, Saw, Square, Wide Pulse, Narrow Pulse
Waveform (OSC 4): Triangular, Reverse Saw, Saw, Square, Wide Pulse, Narrow Pulse
Switches: Oscillator Modulation On/Off
OSC 4 Control (By Keyboard) On/Off
Mixer Section Knobs
Volume (OSC 1, 2, 3, 4): 0 to 10
Volume (External Input): 0 to 10
Volume (Noise): 0 to 10

OSC 1, 2, 3, 4: On/Off
External Input: On/Off
Noise: On/off
Noise Source: Pink or White

LED: 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 10

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

Output Knobs
Volume: 0 to 10
Headphone Volume: 0 to 10
Attack: 1 ms to 10 s
Decay: 4 ms to >35 s
Sustain: 0 to 10

Loudness Decay: On/Off

LED: Power

Effects Distortion
Dist: 0 to 10
Tone: 0 to 10
Level: 0 to 10
Switch: On/Off

Buttons: I and II
Switch: On/Off

Sequencer / Arpeggiator Arpeggiator: 8 Patterns
Sequencer: 32-Steps per Pattern, (8 Banks of 8 Patterns, 64 Total)
Power External Power Adapter: 12 VDC, 1000 mA
Dimensions (H x W x D) Not Specified by Manufacturer
Weight Not Specified by Manufacturer

Based on 0 reviews

0.0 overall

Be the first to review “Behringer POLY D 4-Voice Polyphonic Analog Synthesizer with Ladder-Style Filter”

There are no reviews yet.