Open Box: Behringer POLY D, Full-Size 37 Keys Polyphonic Analog Synthesizer

Special Price $649.99 was $1,048.50
Availability: Out of Stock


  • Open Box. 
  • Analog synthesizer with quadruple VCO design allows for insanely fat music creation.
  • 4-Voice polyphonic/paraphonic design with mono, unison and polyphonic mode.
  • 37 semi-weighted full-size keys featuring velocity functionality.
  • Authentic reproduction of original "D Type" circuitry with matched transistors and JFETs.
  • 5 variable oscillator shapes with variable pulse widths for ultimate sounds.
  • Distortion circuitry adds insane spice and edge to your sounds.
  • Switchable low/high pass filter mode for enhanced sound creation.
  • Comprehensive MIDI implementation with MIDI channel and Voice Priority selection.
  • External audio input for processing external sound sources.


The Behringer POLY D lets you conjure up virtually any monophonic or polyphonic sound imaginable with incredible finesse and ease. The pure analog signal path is based on authentic VCO, VCF, VCA, and ladder filter designs in conjunction with a dedicated and fully analog triangle/square wave LFO. Owning a POLY D is like having your own personal time machine, enabling you to freely embrace the past – or shape the future!

True to the Original

Great care has been taken in designing the POLY D including the true to the original “D Type” circuitry with its matched transistors and JFETs, ultra-high precision 0.1% thin-film resistors, and polyphenylene sulfide capacitors. This highly-focused attention to detail is what gives the POLY D its ultra-flexible sound shaping capability, which covers everything from super-fat bass and leads tones, stunning effects, progressive organ sounds – and all the way out to the otherworldly sounds of your imagination.

Three Modes to Choose From

With the POLY D, you can get the best of three worlds by switching between monophonic, polyphonic or unison modes. With the POLY D set to Mono, you can have the characteristics of a classic monophonic synth with fuller, more expressive solos, bass lines, and portamentos. Flipping the switch to Poly allows you to play more than one note at the same time to produce stunning chord harmonies and luscious pads that add soul and depth to your music. Unison Mode thickens up your sound by layering all of the POLY D’s voices on top of each other, adding more harmonic content and creating a richer sound.

Four VCOs

The POLY D has four highly-flexible Voltage Controlled Oscillators (VCOs) that provide an incredible range of 5 waveforms for sculpting the perfect sound. Oscillators 1, 2, and 3 options include: triangular; triangular/saw; saw; square; wide pulse; and narrow pulse, while OSC 4 features: triangular; reverse saw; saw; square; wide pulse; and narrow pulse. Additionally, all 4 VCOs can be adjusted across an extremely-wide, 6-octave range (LO, 32’, 16’, 8’, 4’, and 2’). This amazing flexibility gives you all the tools you need to be your creative best.

24 dB Ladder Filter and VCA

The very heart of the POLY D’s sound is its highly flexible 24 dB Ladder Filter, which lets you freely experiment with the Cutoff Frequency, Emphasis, and Contour to dial in the perfect sound. POLY D’s Filter Mode switch can be set to either Lo- or Hi-pass for selecting the range of your choice. You can also adjust the Attack, Decay, and Sustain controls to affect the cutoff frequency with time.

Controls & Connectivity

We just can’t help ourselves – like you, we're gear-heads, too. For those who want the numbers, POLY D has 84 controls, all laid out in a highly-intuitive format that puts the joy back into your music creation. Input and output connections include MIDI I/O and Thru over USB/MIDI DIN; After Pressure and Velocity outputs with their own dedicated volume controls; internal and external V-Trig I/O; external Loudness, Filter, OSC, and modulation source outputs.

Unleash Your Imagination

When it comes to not just pushing envelopes but creating them, POLY D gives your imagination its voice – and it’s so very affordable. When modern performance calls for classic analog sound – it calls for the Behringer POLY D!

Product Specifications:

USB Type Class-compliant: USB 2.0, type B

Supported Operating Systems: Windows XP or higher, Mac OS X 10.6.8 or higher

Power Requirements External Power Adaptor: 12 VDC 1000 mA

Power Consumption: 10 W max.

Environmental Operating temperature Range: 5°C – 40°C (41°F – 104°F)

Dimensions (H x W x D): 90 x 648 x 361 mm (3.5 x 25.5 x 14.2")

Weight: 10.2 kg (22.5 lbs

More Information
BRAND Behringer
Manufacturer Part Number POLY D-OB
Condition used