This is a video to demonstrate the EML POLY-BOX. The POLY-BOX was created in the late 70's to allow polyphony and chords to the modular world. It takes an oscillator input and uses phase-lock loops and top octave divide down circuitry to give you all the notes of the western equal-tempered chromatic scale.

Using this as a processor for a Roland SH-101 is shown in this video. However, any synthesizer can be used, and one can even confuse it more when 2 or more oscillators are mixed into the input of the POLY-BOX.

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