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-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 QS7, QS8, QS6.1, QS7.1, QS8.1 and QSR 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.

AdamEvans

March 23, 2013 @ 5:33 pm

The UGLIEST keyboard ever made. Remember seeing it for the first time back in '97 - thought I was having a nightmare lol. Another one of those "what the hell were they thinking" moments

Matthew

October 31, 2012 @ 5:34 am

When I first picked it up I was so amazed by it's unique build structure.

da twoof

August 29, 2012 @ 10:28 am

The absolute worst rompler in existence.

I've heard better sounds on some Yamaha Portasound's. My friend bought one for our band when they first came out and I still remember that crushing feeling when we both realized that the filter was NON-RESONANT!

'Drum kits based on the D4 drum module'. Yep - how to make an awful synth even worse...

I would not take one of these if it were offered to me for free. It's that bad.

jayc

July 6, 2012 @ 3:54 pm

is anyone else having any issues with the headphones.
i pulled my alesis out and tried to play with it with the headphones with no avale..
i can hear it powering up through the headphones and powering down throught the headphones... but i cant get any sound from the actual keyboard to come out... should i reset it?

Quadradude...

April 22, 2012 @ 1:33 pm

@ Al... Yeah!.... it's tuning that's been set. You can re-tune it manually... but it's easier to do a factory re-set.

Just Hold down the buttons numbered 0 and 3 then power it on while you're holding them. It should then boot up into factory fresh state.

Enjoy!!

<654321>

 

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