Lexicon PCM Native Effect Bundle, plug-in bundle contains 7 legendary Lexicon Effect algorithms: Pitch Shift, MultiVoice Pitch, Chorus, Resonant Chords, Random Delay, Dual Delay and Stringbox, Multi platform (Windows XP/Vista/7, Mac OSX PowerPC & Intel). VST, Audio Unit and RTAS compatible. Note: requires optional Pace iLok 2 (order code: 257900) for online authorisation