Synthogy Ivory Grand Piano 1.5 Virtual Instrument Nearly 30 GB of Grand Piano sampled instruments like Yamaha C7, Bosendorfer 290 and Steinway 9' Powerful 32-bit sample playback & DSP engine, engineered specifically for recreating acoustic piano Sympathetic String Resonance for realistic damper pedal response; Ambience/Chorus/EQ effects 88 keys individually sampled in up to 8 dynamic levels - no loops; separate samples for soft pedal Runs as a plug-in for AU, RTAS, or VST; for WinXP, Mac OS 9.2/10.2 or greater