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Ensoniq SQ-80 - Image 1

Ensoniq SQ-80

KeyboardHybridPolyphonic

Back in 1988, this synth arrived as a clever evolution of Ensoniq's groundbreaking ESQ-1, packing in 43 extra waveforms—including transient attacks like violin bows and mallet strikes, plus five drum kits—for sounds that bridged crisp digital edges with creamy analog warmth.

At its core, it blends wavetable synthesis via three digitally controlled oscillators per voice (from a library of 75 waveforms) with a resonant 24dB/octave lowpass filter using classic CEM3379 chips, delivering that sought-after hybrid tone. Four multi-stage envelopes and three LFOs feed into a flexible modulation matrix that supports oscillator sync, ring mod, and polyphonic aftertouch across its 61-key velocity-sensitive keyboard, making expressive playing a joy. The user-friendly interface shines with a large dual-row fluorescent display and direct-access buttons, sidestepping menu-diving frustration, while an onboard 8-track sequencer, 40 onboard patches (expandable via floppy drive or cartridge), and full MIDI In/Out/Thru keep it studio-ready in a sturdy 40-inch wide, 29-pound chassis with pitch/mod wheels and pedal inputs.

Players have long praised its rich, characterful voices—organs, pads, basses, and effects that hold up today—along with the rare poly aftertouch and sequencing power, though some note the button-only editing demands patience compared to modern knobs. It's a vintage gem that rewards deep dives with timeless, versatile tones.

Released

1988

Status

Discontinued

Synthesizer
Format
Keyboard
Type
Wavetable, Wave Morphing
Internal Battery
No
Voice
A/D
Hybrid
Polyphony
Polyphonic
Oscillators
3
Oscillator Type
DCO (Digitally Controlled)
Voices
8
Filter
Lowpass, 24dB/oct (4-pole), Resonant
Envelopes
4
LFO
3
Effects
No
Expression
Aftertouch
Polyphonic
Velocity
Yes
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
1 xStereo
Headphone
1
MIDI
In, Out, Thru
MIDI Type
DIN (5-pin)
Ports
Sustain Pedal, Expression Pedal, Floppy Drive
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
Yes
Mod Matrix
Yes
Memory
40 patches onboard + 80 with EEPROM cartridge, floppy drive
Measurements
Dimensions
40.25 x 13.5 x 3.75 inches (102 x 34 x 9 cm)
Weight
29.2 lbs (13.2 kg)
Last updated Feb 26, 2026