Alesis QuadraSynth (1993)
A 76-key digital synthesizer and Alesis's first major synth, with 64-voice polyphony and PCM-based sound generation.
Overview
The Alesis QuadraSynth is a digital subtractive synthesizer released in 1993. It was Alesis's first synth. The 76-key keyboard responds to velocity and release velocity, and it also has channel aftertouch. Sound comes from PCM samples, which are the basis of its digital subtractive architecture. The voice is distinctive, and users have strong opinions about it. Some call it their "first real synth." Others say it splits opinions like no other.
Specifications
| Polyphony | 64 voices |
| Keyboard | 76 keys |
| Keybed Features | Velocity-sensitive, release velocity-sensitive, monophonic aftertouch |
| Sound Generation | PCM sample-based digital subtractive synthesis |
| Dimensions | 120 cm x 35 cm x 11 cm |
| Weight | 18 kg |
Market
Owners report non-functional displays and damaged pitch-bend levers. Repair discussions exist, particularly for the QuadraSynth Plus Piano variant. Used units have turned up in secondhand markets such as yard sales for around $75, and some buyers question whether $100 is a fair price for a working one.
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