SynthsAlesis ⇝ Alesis S4

The S4 is the rackmount version of the QuadraSynth. It can be expanded with 4MB and 8MB Alesis Q Cards and includes drum kits from the D4 drum module. The S4 was later upgraded and released as the S4 Plus.

Specifications

Year Released: 1993

Polyphony: 64 notes

Multitimbral: 16 parts

Preset Patches: 128

User Patches: 128

Preset Performances: 100

User Performances: 100

ROM: 16MB sampled at 48 kHz

Effects: Onboard effects based on the Alesis Q2 FX processor

Outputs: 4 1/4" audio outputs, ADAT optical

This is a 1-space rack unit.

User Demo Videos

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File Downloads

Alesis S4 Manual

Items for Sale on Reverb

Alesis S4 Quadrasynth 90s BlackAlesis S4 Quadrasynth 90s Black ($201.26)

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Alesis Stereo Grand Piano QuadraCard 8 Meg Card For QuadraSynth & S4 SynthesizerAlesis Stereo Grand Piano QuadraCard 8 Meg Card For QuadraSynth & S4 Synthesizer ($59.59)

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Alesis Classical QuadraCard QCard QS Quadra Card For QuadraSynth S4 SynthesizerAlesis Classical QuadraCard QCard QS Quadra Card For QuadraSynth S4 Synthesizer ($59.94)

Alesis S4 Plus QuadrasynthAlesis S4 Plus Quadrasynth ($200)

Alesis Quadrasynth S4+ (Plus):  New Battery Installed & Includes 'Stereo Grand Piano' Q-Card!Alesis Quadrasynth S4+ (Plus): New Battery Installed & Includes 'Stereo Grand Piano' Q-Card! ($259)