The Ion Analog Modeling Synthesizer is one fat-sounding digital synth! Using Alesis' proprietary DSP Analog Modeling technology with a 500 MIPS processor (500 million instructions per second), every knob and button is tweakable in real-time giving you the feel and sound of a true analog oldie.
The Ion has 8-voice polyphony with 3 oscillators per voice, and is 4-part multi-timbral. It offers continuously variable wave shapes (sine waves can morph into square waves), plus osc-sync and FM synthesis. 16 filter types are included, along with two LFOs, Sample & Hold, and an Arpeggiator-all of which sync to MIDI clock. A powerful and intuitive modulation matrix is built in, as well as a 40-band vocoder that does not use up any polyphony. External stereo audio can be processed through the filters, effects, or the vocoder.
Though not a true analog like the Andromeda A6, the Ion is capable of creating a wide variety of sounds from warm thick analog pads all the way to gritty monophonic leads and basses, as well as some funky and realistic sound effects. The Ion also simulates the best of the classic analogs such as Oberheims, Roland Jupiters, Arps, Moogs, etc, largely due to its great filters - there is hardly any aliasing even on the highest tones. The Ion also comes equipped with not one but two modulation wheels, both assignable to mods in the mod matrix (LFOs only assignable to mod wheel 1). The Ion has an amazing range of tonal possibilities.
...tech for Gary Neuman and Skinny Puppy, but he still knew when a digital synth like the Alesis Ion had aliasing in the higher registers. Many of you knew him as SynthC0ck69.”
I would like to open up another sub-discussion about User Interface (UI). I'm kind of obsessed with it, and have just bought the book Push Turn Move, a Kickstarter project which is all about User interface for electronic instruments. In some special cases the sound in a synth is so unique that I am willing...
Very fast FPGA logic, with very low aliasing
Three oscillators with 3 variable waveforms
Dual multimode filter, with several emulations (4-pole Moog Ladder, 2-pole Oberheim, 4-pole ARP, 4-pole Jupiter-8 and more)
Noise, S&H, Arpeggiator
Lots of LED indicators, e.g. "in tune" OSC tuning...