E-RM Polygogo

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$ 589.00 Total

Polygonal Digital Stereo Oscillator

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Product number:
CV3540

Polygonal Digital Stereo Oscillator

E-RM’s Polygogo Eurorack module is the very first digital stereo oscillator to feature the brand-new Polygonal Synthesis technique, invented by E-RM founder Maximilian Rest and DSP specialist Christoph Hohnerlein. Based on complex two dimensional amplitude shaping of sine waves, the Polygogo is a performance-oriented, high-quality instrument which allows you to explore fascinating sounds and shapes alike. Thanks to the combination of Polygonal Synthesis, two internal modulation sources and a beefy, fully-analog overflow stage, the Polygogo is capable of generating an extremely wide array of animated spectra. Its results range from lush drones, massive basses and fierce leads to glitch madness and even sounds reminiscent of acoustic instruments.

Polygonal Synthesis is heavily centered around the interaction between user and polygonal object behind the OLED screen. Based on the number of vertices (order) and their displacement (teeth), the fundamental tone and the harmonic ratio are created. Rotational modulation (roll) pans the sound in the stereo field or acts as a vibrato. The internal linear FM operator (OP ratio / OP amt) can modulate the fundamental frequency and its high spectral content. An analog overflow stage at the output (fold) is able to act as a wave crusher – thus, it gives sounds the finishing touch right in front of the output (X/Y).

All main parameters are accessible via sliders. For fine-tuning and to give sounds some additional tweaks, potentiometers were added. Control voltages can be used to modulate each and every parameter. With a cable plugged into one of the CV inputs, the corresponding potentiometer turns into an attenuator respectively attenuverter. Push buttons allow you to choose between three modes of operation. In detail, there are “Infinite Cycling”, “quantized Order” and “stepped OP ratio”. Last but not least, a hard sync input is available.

Features
• E-RM Polygonal Synthesis technique
• Performance sliders & Potentiometers for main parameters - Pitch, Order, Teeth, Roll, Operator, Exponential FM, Fold
• High speed V/oct and exponential FM inputs (24 bit / 96 kHz)
• Six actively filtered CV inputs (16 bit / 6 kHz)
• One trigger input for hard sync
• 384 kHz internal sample rate, 24 bit / 96 kHz stereo output

In the Box
• The module itself
• Eurorack power cable

+12v: 110mA
-12v: 15mA
+5v: 0mA
Width: 32HP
Depth: 26mm
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