similar to that of the HD-1, but differs slightly in a few ways, such as: Allows selection of any two EXi for layering or splitting Adds a "Common" step sequencer, shared by all voices in the Program Adds audio input selection for each of the two EXi (currently used by MS-20EX and MOD-7) Adds transposition for each EXi AL-1 Virtual analog synth engine. Two main oscillators with analog-style FM and sync Korg claims proprietary anti-aliasing technology, for no audible aliasing over standard 88-note range, with sync (but with drive and ring-mod off) Waveforms: Saw, Pulse, Saw/Pulse, Double Saw, Detuned Saw 1, Detuned Saw 2, Triangle, Square/Triangle Wave Morph and Pulse Width/Phase/Detune Sub-oscillator Audio input Noise generator with saturation and dedicated filter Ring modulation (Ring Mod, AM, Rectify, Clip) Mixer provides modulatable volume and filter A/B pan for osc 1, osc 2, sub osc/audio input, noise generator, and ring mod Per-voice, modulatable Drive (nonlinear distortion) and Low Boost (low EQ) Dual resonant multimode filters, including "multifilter" Multifilter provides two separate sets of gain controls for LB, HP, BP, and dry signals, with modulatable crossfade between the two sets 4 EGs 4 LFOs 2 "AMS Mixers" (modulation signal processors) Per-voice step sequencer CX-3 A modeled tonewheel organ based on Korg's dedicated CX-3 organ keyboard. This organ mimics and in many ways enhances the sound of the Hammond organ and Leslie speaker with amplifier simulation and other enhancements. STR-1 A plucked string physical model that allows you to pluck, strike, scrape, or otherwise "excite" the string with 16 different "pluck" types, noise, or any of the onboard or RAM-based PCM waveforms. LAC-1 The optional LAC-1 Legacy Analog Collection($249.00) EXi adds the MS-20EX and PolysixEX virtual analog synthesizers. MS-20EX Runs in demo mode until activated. PolysixEX Runs in demo mode until activated. MOD-7 The MOD-7 ($249.00) includes six oscillators which combine simultaneous VPM (aka FM), Waveshaping, and ring modulation, plus a PCM oscillator, noise generator, audio input, two multi-mode filters, three 2-in/1-out mixers, and an input main mixer – with a patch panel for routing them together. Note: The MOD-7 and PolysixEX/MS-20EX plug-ins are only available from www.korguser.net. Owners must register their Oasys at the site in order to purchase them. This includes providing the Public ID and serial numbers of their unit. Notable users Kurt Ader (KApro Sound Designer for Jordan Rudess Roger Hodgson - Le Chant du Gros, Le Noirmont, Switzerland 2012-09