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Moog Opus-3

(image courtesy of SoundDoctorin)

Released: 1979



Ensemble synth with 3 sections (strings, organ, brass). Architecture Class: Conventional (subtractive).

Ebay Description:

The Moog Opus-3 is a 49 key polyphonic ensemble synthesizer, featuring string, organ, and brass sections, along with an LFO routed to pitch and filter cut-off, chorus, stereo outputs, and an AR volume envelope. The string section has a resonant low/band/high pass analog filter. The organ section has a 12dB tone control and shares a resonant 24dB low pass analog filter with the brass section (ADSR envelope with shared D/R).


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
49 keys H:5.625in D:14.9375in W:29.75 20lbs (9kg) no mono stereo no no no sustain AC


Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- N/A no no no knobs/sliders LED


Multitimbral Polyphony Unison Architecture
no full no String:VCO->MMF->VCA Organ:VCO->LPF->VCF->VCA Brass:VCO->VCF->VCA


Effects Pan Modulator Volume Modulator Headphone
chorus (strings/organ) no VCA-EG no


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A Pitch-Wheel no


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no no pedal no no


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
Strings analog saw 8' 4' no no LFO Pitch-Wheel no
Organ analog square 1' 2' 4' 8' 16' no no LFO Pitch-Wheel no
Brass analog saw 4' 8' 16' no no LFO Pitch-Wheel no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
String analog discrete yes low|band|high pass LFO no no
Organ analog discrete no 12dB low pass no no no
VCF analog discrete yes 24dB low pass LFO no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
VCF-EG sustain attack decay/release no no no no no
VCA-EG - attack release no no no no no


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO ? yes no no no no no

Further Information:


Conventional Models
Minimoog Sonic 6 Satellite Minitmoog Micromoog Taurus Polymoog Synthesizer Polymoog Keyboard
Multimoog Prodigy Opus-3 Liberation Rogue Concertmate MG-1 TaurusII Source