Roland produced a series of 15 SN-U100 expansion cards for the U-110, U-20, and U-220 synthesizers.

Korg EX-8000

The Korg EX-8000 is a rackmount version of the DW-8000.

Year Released: 1985
Polyphony: 8 Notes
Oscillator Waveforms: 16
Patch Memories: 64

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Korg Mono/Poly

The Mono/Poly was first released in 1980. It is a 4-voice polyphonic synthesizer with 4 independent voltage-controlled oscillators that can generate sine, sawtooth, pulse width, and pulse width modulation waveforms. These oscillators can also be used in unison for a monophonic lead tone - thus the name Mono/Poly. It also has separate envelope generators for the oscillators and the filter. It has two low-frequency oscillators that can be used to modulate the envelope, arpeggiator, and pulse width independently.

Korg M1

Year Released: 1988
Polyphony: 16 Notes
Keyboard: 61 Keys, Velocity and Aftertouch
Wave ROM: 4MB (144 PCM Waveforms)
Patch Memories: 100
Sequencer: 8 Tracks, 10 Songs, 100 Patterns, 7,700 Notes

User-Created Demo Videos:

Kawai K4

Year Released: 1989
Keyboard: 61 Keys, Velocity and Aftertouch
Polyphony: 16 Notes
Multitimbral: 8 Parts
Oscillator: 16-bit PCM

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Sequential Circuits Prophet-10

The Prophet-10 is a stacked pair of Prophet-5 synthesizers. It was not produced with MIDI, but can be retro-fitted with MIDI support.

Year Released: 1980
Polyphony: 10 Notes
Keyboard: 2x 61 Keys
Patch Memories: 32
Oscillators: 2 VCOs Per Voice
Sequencer: 6-Track With 4000 - 10200 Note Capacity
Filter: Low-Pass Resonant VCF + ADSR
LFOs: 1

User-Created Demo Videos:

Casio CZ-1000

Year Released: 1985
Keyboard: 49 Keys
Polyphony: 8 Notes
Multitimbral: 4 Parts
Oscillator: Phase Distortion (sine, saw, square, pulse, resonance, double-sine, saw-pulse)
Patch Memories: 16 Preset, 16 User
Effects: Ring Modulator
Envelope Generator: 8 Stages

User-Created Demo Video:

Roland JV-1080

Year Released: 1994
Polyphony: 64 Notes
Multitimbral: 16 Parts
ROM: 8MB, Expandable to 42MB (4x SR-JV80 Expansion Slots, 2x Data Card Slots)
Patch Memories: 640 Patches, 128 Performances
LFO: 2x (chaos, random, sample and hole, saw, sine, square, trapezoid, triangle)

User-Created Demo Videos:

Sequential Circuits Prophet VS

Year Released: 1986
Keyboard: 61 Keys, Velocity and Aftertouch
Polyphony: 8 Notes
Multitimbral: 2 Parts
Patch Memories: 100
Oscillator: 96 preset waveforms, 32 user waveforms
LFO: 2, With Independent Envelope Generators
Filter: Digitally-Controlled Analog 4-pole Lowpass Curtis With Envelope Generator
Effects: Twin Chorus, Stereo Panning
Envelope Generotor: 5 Stage
Known Users: Brian Eno, Depeche Mode, Erasure, John Carpenter, Kraftwerk, Trent Reznor (Nine Inch Nails), Vangelis, Vince Clarke.

User-Created Demo Videos:

Casio CZ-3000

Year Released: 1986
Keyboard: 61 Keys
Polyphony: 8 Notes
Patch Memories: 32 Preset, 32 User
Oscillator: 2x Digital Phase-Distortion
Envelope: 8 Stages

User-Created Demo Videos: