MOTU MX4 Version 2 Multi Synthesizer Virtual Instrument (Mac Only) Combines subtractive, wavetable, FM, AM, analog synthesis engines; flexible programming Unlimited voices, polyphony and instantiations based on CPU availability; 32bit/192K audio quality 3 oscillators w/ modulatable waveform symmetry and hard sync, 2 variable topology multimode filters 2 variable topology multimode filters, 4 variable waveshape LFO's and 4 ADSHR envelopes, & more! Loads of presets; extensive soundshaping power; runs as AU, MAS, or RTAS plugin for Mac OSX