Virtual instruments powered by Steam also have unlimited expansion possibilities. The new core software is flexible and open - allowing patches to be shared across hosts and computer platforms. Spectrasonics can also add new patches and sounds to the core library giving the user an ever-expanding sonic palette. In addition, all Spectrasonics virtual instruments based on S.A.G.E. and Steam technologies can interact in musically useful and innovative ways for a smoother creative flow.Spectrasonics Omnisphere Virtual Instrument is cross-platform compatible with Apple Macintosh OS X 10.4 and higher as a native Universal Binary and also with Microsoft Windows XP/Vista. Audio Units, VST, and RTAS plug-in formats are supported for compatibility with all major host software.Spectrasonics Omnisphere Virtual Instrument System Requirements:-2GB or more of RAM-Dual Layer compatible DVD-ROM drive-50GB of free hard drive space-Mac Recommendations: -2.0 GHz or higher processor -G5 PowerPC compatible - Intel Core2Duo or higher recommended -OSX 10.4.9 or higher -AudioUnit, VST 2.4 or RTAS capable host software -Native Universal Binary for Intel Macs-Windows Recommendations: -Pentium 3.0 GHz or higher (Intel Core2Duo recommended) -VST 2.4 or RTAS capable host software -Microsoft XP SP2 or later -Microsoft Vista compatible