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Alesis | Quadrasynth (Plus)
The QuadraSynth (QS4) 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-effects processor as the QuadraVerb 2, drum kits based on the D4 drum module, 4 assignable control knobs, one PCMCIA card slot, 48kHz clock input, and 4 audio outputs.
The QuadraSynth is undoubtedly a powerful and flexible synthesizer capable of creating rich sounds - both acoustic and electronic. It uses digital additive/subtractive sample playback synthesis to create high quality stereo grand pianos, organs, strings, drums/percussion, brass, woodwinds, new and classic synth textures, and more.
Released in 1995/1996 came the new and improved QuadraSynth Plus synthesizer. The QuadraSynth Plus has more ROM (24MB expandable to 32), many more program patches (640) and mixes (500). The General MIDI library has been added, as well as an 8MB stereo Grand Piano sample (also found in the stream-lined QS models), and a PCMCIA expansion slot. For an all around versatile modern synthesizer that isn't focused just on dance or trance, be sure to consider the QuadraSynths.
|Engine Detailed||48kHz Linear samples QS: 16MB, expandable to 24MB using PCMCIA ROM and RAM cards QS Plus: 24MB, expandable to 32MB using PCMCIA ROM and RAM cards|
|FX||4 On-board effects, based on the Alesis QuadraVerb 2 FX processor|
|Memory||QS: 128 preset 128 user programs, 100 preset, 100 user mixes QS Plus: 512 preset 128 user programs, 400 preset, 100 user mixes|
|Audio||2 stereo outputs.|
|Produced:||1993 - 1995|
|Legend:||Obvious||Y: Yes, N: No, N/A: Not Applicable|
|VCO||Voltage Controlled Oscillator||DCO||Digital Controlled Oscillator|
|LFO||Low Frequency Oscillator||Sub||Sub Oscillator|
|VCF||Voltage Controlled Filter||VCA||Voltage Controlled Amplifier|
|Velocity||As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.||Aftertouch||Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.|
|Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.|