XLN Audio Addictive Keys Trio, virtual keyboard instruments, bundle contains license for 3 xln addictive keys products of your own choice (requires download from xln), main features of all addictive keys products: fast loading time and easy graphical user interface, well prepared producer presets for instant usage, professional effect section, authentic sound, adjustable mic positioning, adjustable room ambience, 32 and 64 bit support, stand alone and plug-in (vst, rtas, au, aas), requirements: mac os x 10.6 and higher - windows 7 and higher, internet connection