Alesis Quadrasynth series
The Alesis Quadrasynth series represents a series of synthesizers released by Alesis, spanning the years of 1993 to 2003. They incorporate a synthesis method known as "QS Composite Synthesis",[1] with a comparable feature set to the Korg ai² series of synthesizers, but instead featuring Alesis sounds and effects.
The voice count for all synthesizers listed here is 64, with up to 4 voices per note.
Original line
Original models
The original lineup consists of one keyboard and one module version, both featuring 256 total programs and 200 total mixes.
- Alesis Quadrasynth - A 76-key keyboard
- Alesis Quadrasynth S4 - Rackmount version
Plus models
The Plus models upgraded the firmware to v2.0, and with it came a lot of big and small additions - more programs and more mixes, a new effect, and more.
- Alesis Quadrasynth Plus Piano - The keyboard, adds 8MB of ROM for a new piano and various new waves
- Alesis Quadrasynth S4 Plus - The module version, adds 4MB of ROM for various new waves
QS line
The successor to the Quadrasynth came in the form of the QS line of synthesizers - featuring a new look (more in line with contemporary Alesis offerings) and a completely new set of sounds.
Non-upgraded models
- Alesis QS6 - Features only 8 megabits of ROM.
- Alesis QS7, Alesis QS8 and Alesis QSR - features 16 megabits of ROM, and two PCMCIA card slots instead of just one.
- Alesis Nanosynth - a 1/3 width, 1U module centering around GM compatibility. 8 megabit of rom like the QS6, can load QS6 programs. Has a cheeky manual.
Upgraded models
- Alesis QS6.1, Alesis QS7.1 and Alesis QS8.1 - features a larger display, and the QS6.1 is brought up to the same standards as the 7.1/8.1. Only difference lies in the keyboard and number of keys.
- Alesis QS6.2 and Alesis QS8.2 - features a shiny silver finish (typical of the early 2000s), removes one PCMCIA slot.