SynthsAlesis ⇝ Alesis S4 Plus

Alesis S4 PlusAlesis S4 Plus Back

The S4 Plus is an updated version of the Alesis S4 with a larger sound ROM and more patch and performance ("mix") presets. It is the rackmount version of the QuadraSynth Plus but has a slightly different set of piano sounds. It can be expanded with 4MB and 8MB Alesis Q Cards.

Specifications

Year Released: 1995

Polyphony: 64 notes

Multitimbral: 16 parts

Preset Patches: 512

User Patches: 128

Preset Performances: 400

User Performances: 100

ROM: 20MB 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 Plus with original power supply rackmount version of QuadraSynthAlesis S4 Plus with original power supply rackmount version of QuadraSynth ($150)

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)