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E-MU 25 Modular Analog Synthesizer

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Description
The E-MU 25 was a precursor to E-MU’s Modular systems, featuring about twenty modules behind a single front panel, including 3 VCO's, 2VCF's, 2VCA's and two envelope generators. Unlike the “bulletproof” all-aluminum standards of the Modular systems, the E-MU 25 used cheap slide pots and plastic switches, and even sported a "vacuum cleaner" power switch! Only two units were produced; they were identical on the outside, but had completely different circuitry inside because the circuitry was evolving so quickly.
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Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators
Oscillators: 3
Waveforms: Pulse Variable, Square, White Noise
Osc Modulation: Envelope, Keyboard, Knob, LFO, Oscillator
Envelopes
Envelopes: 2
Evelope Paramerters: Attack, Decay, Sustain, Release
Filters
Filters: 2
Types: 24dB Slope (4-pole), Resonance
Filter Modulation: Envelope, Keyboard, Knob, LFO, Oscillator
LFO
LFO: 2
Polyphony & Tuning
Polyphony: 1
Timbrality: 1
Tuning: Atonal, Standard
Modes: Mono
Patches
Patches RAM: 1
Case
Case: Desktop
Keyboard: 37 keys, Non-weighted, Plastic
Controls: Buttons, Knobs, Mod - Wheel 2, Modulation 1/4" Jacks, Sliders
Connections
Audio Output Connections: 1/4" Phone Jack, Mono Out
CV Ports: CV IN, CV OUT, Gate In, Gate Out, Trigger In, Trigger Out
Production
Year Released: 1971
Design Notes:

The E-mu 25 had been a "front panel" synthesizer, but E-mu developers Dave Rossum and Scott Wedge thought it would be more fun to build a modular synthesizer.
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