USB Audio Adapter with Virtual 7.1 channels The virtual 7.1 channel sound is terrific. ENHANCES HEADPHONE & SPEAKER SOUND! Even on the lowest volume setting. Plug & Play. The software will instantly begin an easy set up. Handles 23 different kinds of acoustic fields and 16 different rhythms and sing along with your microphone plugged in. An especially perfect replacement for the normal computer audio jacks with only basic sound. Support System: Windows / 2000 / XP / Server 2003 / Vista / 7, Linux/ Win CE (5.0 & 6.0)/ Android (2.1, 2.2, 2.3, 4.0) and Mac OS.