The Alesis Quadrasynth is a 76-key, 64-note polyphonic [2] PCM sample-based digital subtractive synthesizer first introduced in 1993. It was Alesis's first major foray into synthesizer production. Function. In the Quadrasynth's composite synthesis system, up to four "tones" are used to create a single "patch" or synthesizer sound.. Dave Crombie gets to grips with Alesis' Tardis‑like synth module and finds out that the inside is a lot bigger than the outside. For me, the QuadraSynth is one of the more important new instruments to appear on the synth market for quite a while, not because of astounding new technologies, hi‑tech reworkings of old principles (à la OB*Mx, Wave, VL1, etc) or even because it sounds.
The QuadraSynth was introduced in 1993 by Alesis, and it was their first major synthesizer. It's a 64-voice, 76-key digital synthesizer that also came in a rack-mountable version: the S4 Sound Module. It had a whopping 16 MB of sample ROM, and was the first synth to offer the ADAT Optical Digital interface. It also featured the same multi.. The Quadrasynth was the first synthesizer produced by Alesis and is named for the synthesis engine, which allows up to four 16-bit PCM waveforms to be combined into a single sound. Although it has 64 notes of polyphony, it should be thought of as 64 "tones" of polyphony, since using multiple waveforms in a patch reduces polyphony by a.