Zalman ZM-RS6F-USB Virtual 5.1-Channel USB Stereo Headphones (Discontinued by Manufacturer) Virtual 5.1 channel stereo system equipped with 6 speakers, optimized for home theatre environment Enhanced spatial and realistic effects by separating front, rear, and center speakers Real Surround Sound field comparable to a complete multi-channel speaker system Excellent fidelity, enhanced localization of on-screen sound, clear dialogue and discrete sound audibility Real Surround Sound Headphones produce a real surround field comparable to a complete multi-channel speaker system