- stunning visuals and response based on real keys pictures, near full/5 octaves display (on iPad) - best of sounds created in late eighties (using advanced 4 operators FM and Linear synthesis from an underrated D-series synth). - samples up to 30s length to capture the original filter, stunning low end, never heard before synth sounds and effects - Midi support - IAA (Inter Application Audio) and Audio Unit v3 - uses very few CPU The base version is free, and In App Purchase allows to unlock the full Pro library (32 presets, 900 MB size).