["brand new and high quality.\nFeatures:\nThis external sound card requires no driver installation, plug and for play.\nIt is equipped with DSP parameter adjustment knob to set more effects.\nIt has a built-in 48V fantasy power supply, which can be used with condenser microphones.\nIt supports USB2.0 high-speed connection.\nPlug in the power and connect the speakers, you can sing even if you disconnect from the computer.\nIt has an Innovative unique mic preamp with individual gain control.\nAttenuator function button equipped for music fade out automatically when mic signal present.\nfor Mac OS (Intel-Mac) and for Windows XP, Vista (32-bit/64-bit), for Windows 7 (32-bit/64-bit) & for Windows 8 (32-bit/64-bit)\nExternal Sound Card only, other accessories demo in the picture is not included.\n\nSpecifications:\nMaterial: Metal\nSize: app. 140x110x25mm / 5.51x4.33x0.98inch\nColor: As pictures shown\nQuantity: 1Pc\nfor Mac OS (Intel-Mac) and for Windows XP, Vista (32-bit/64-bit), for Windows 7 (32-bit/64-bit) & for Windows 8 (32-bit/64-bit)\n\nMic Input\nFrequency Response ： 22Hz to 22kHz (+/-0.2dB)\nDynamic Range ：95dB, A-weighted\nSignal-to-Noise Ratio ： -95dB, A-weighted\nTHD+N ：<0.0061% (-80dB)\nCrosstalk ： -85dB @ 1kHz\nInput Impedance Mic in : 1.8K Ohms, typical\nTotal Gain Range ：+39dB\n \nInst Input\nFrequency Response ：22Hz to 20kHz (+/-0.2dB)\nDynamic Range： 95dB, A-weighted\nSignal-to-Noise Ratio ：-95dB, A-weighted\nTHD+N ：<0.0061% (-80dB)\nCrosstalk ：-85dB @ 1kHz\nInput Impedance Inst in : 500K Ohms, typical\nTotal Gain Range ： +38dB\n \nLine Inputs (RCA IN, Unbalanced)\nFrequency Response ：22Hz to 20kHz (+/-0.2dB)\nDynamic Range： 95dB, A-weighted\nSignal-to-Noise Ratio： -95dB, A-weighted\nTHD+N ：<0.003% (-86dB)\nCrosstalk ：-90dB @ 1kHz\nInput Impedance ：10K Ohms, typical\nAdjustable Gain ：+8dB\n \nLine Outputs 1/2 (Stereo, Unbalanced)\nFrequency Response ： 22Hz to 20kHz (+/-0.2dB)\nDynamic Range ：95dB, A-weighted\nSignal-to-Noise Ratio ： -95dB, A-weighted\nTHD+N ： <0.003% (-86 dB)\nCrosstalk ：-90dB @ 1kHz\nNominal Output Level Unbalanced : +2dBV, typical\n \nHeadphone Outputs (at Maximum Volume; Into 100 Ohm load)\nFrequency Response ：22Hz to 20kHz (+/-0.2dB)\nPower into Ohms ：20 mW into 100 Ohms\nTHD+N ： <0.06% (-66dB)\nSignal-to-Noise Ratio ：-95dB, A-weighted\nMax Output Level into ：100 Ohms +2.0dBV, typical\nLoad Impedance ：32 to 600 Ohms\n\nNote:\nPlease allow 0-1mm error due to manual measurement, pls make sure you do not mind before you bid.\nDue to the difference between monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 x External Sound Car\n1 x Manual\n1 x Compact Disc\n1 x Three Guarantees Certificate\n1 x Usage Guide\n1 x Security Card\n1 x Chinese Panel\n1 x USB Data Cable\n1 x Power Supply"]