Other additions include redesigned user interfaces for the original five AVOX plug-ins, five integrated channels of our unique CHOIR Vocal Multiplier in Harmony Engine, high-quality pitch shifting in THROAT, and tempo-synced alienization rate in MUTATOR . * Ten powerful and unique vocal processors in one affordable bundle * Mac OS 10.4.11 or higher; Windows 7, Vista or XP, Requires iLok USB smartkey and access to ilok.com (from any computer)