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Oberheim Polyphonic Eight Voice EVS-1


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Description
The Oberheim polyphonic Eight Voice EVS-1 is an analog music synthesizer that was produced from 1975 to 1979 by Oberheim Electronics. It was developed by Tom Oberheim, and was the first production synthesizer capable of playing chords.

Oberheim took the idea and electronics of a Minimoog synthesizer and put them in a small box, making a few changes, and produced his SEM (synthesizer expansion module), the building block of his polyphonic synths. By strapping two, four, or eight of these SEMs together under keyboard control, he was able to create practical, albeit large, synthesizers that could play two, four, or eight notes simultaneously. Thus the Oberheim polyphonic was born. Each SEM in an Oberheim polyphonic defines one voice (or note) being played in a chord. In addition to multiple voices, on an Oberheim polyphonic you could save settings for sounds you created with a preset programmer (four and eight voice models) and you could glide from one note or chord to another using portamento.

The Oberheim polyphonic was later outdated by a new line of Oberheim synthesizers and Sequential Circuits synths that used more integrated circuits and also some digital embedded microprocessor control; these were less heavy and much smaller than the Oberheim polyphonic. Despite their maintenance cost and rarity, Oberheim polyphonic synthesizers are still adored by many musicians today for their unparalled sonic 'thickness' and 'depth' caused in part by the random variance between each SEM module.
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Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators
Oscillators: 16
Waveforms: Square, Triangle
Envelopes
Envelopes: 16
Evelope Paramerters: Attack, Decay, Release
Filters
Filters: 8
Types: 12dB Slope (2-pole), Band Pass, High Pass, Low Pass, Notch, Resonance
LFO
LFO: 8
LFO Parameters: Triangle
Polyphony & Tuning
Polyphony: 8
Timbrality: 8
Tuning: Standard
Patches
Patches RAM: 16
Storage: Internal
Editing: CV
Case
Case: Keyboard
Keyboard: 49 keys, 61 keys, Non-weighted, Plastic
Controls: Buttons, Knobs, Switches, Mod - Wheel, Pitch - Lever, Modulation 1/8" Jacks, Pedal - Filter, Pedal - Sustain
Connections
Audio Output Connections: 1/4" Phone Jack, Mono Out
CV Ports: CV IN, CV OUT, Gate In, Gate Out
Production
Year Released: 1977
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Pricing
MSRP List Price: $7790 - convert
Retail Street Price: $7000 - convert
Used Price: $20,000 - convert
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