Check the listing for details. BYTECC BT-US710 USB 7.1CH Sound Adapter NEW!!!. Condition: New. Listed at 16.99 USD. BYTECC BT-US710 USB 7.1CH Sound Adapter NEW!!! Condition: NEW Manufacturer: BYTECC Part Number: BT-US710 Model BrandBYTECC ModelBT-US710 Features FeaturesTurns 2-channel audio into DVD-quality 7.1-channel sound Built-in amplifier for rich and powerful sound Virtual 7.1 channel surround sound provides home-theater quality sound via headphones or stereo speakers Places speakers to preferred positions without moving actual speakers via speaker shifter utility Reduces unwanted static and noises from D/A processing Support RAX2.0,A3D 1.0,and Microsoft DirectSound 3D Xear software offers 27 environment effects and 3 environment sizes, plus a 10-band present equalizer USB 2.0 Full-Speed (12Mbps), USB audio device compliant Plug & Play and obtains power from USB port Supports blue LED for power indication Product dimension: 79x29x13mm