East West Quantum Leap Spaces Plug-in PC Recommended System: Intel Core 2 Quad, or AMD Quad Core 2.66GHz or Higher, 4GB RAM 64-bit Windows / Host Sequencer Sound Card with ASIO Drivers 450MB Hard Drive Space, Ilok Key. 24-bit, True Stereo, Convolution Reverb That Sets a New Standard by Utilizing New Impulse Recording Techniques Developed over the Past Seven Years. Mac Recommended System Mac Pro Quad Core Intel Xeon 2.66GHz or Higher 4GB RAM 450MB Hard Drive Space Ilok Key Mac OSX 10.5 or Later. ATC, Neumann, Telefunken, Neve, Meitner Signal Path, Low CPU usage, with cleanest signal path possible Film Score, Rock, Pop, Jazz, Classical, Esoteric and Dreamy Reverbs