Features:  Has a built-in high-speed digital processor with extremely low distortion and high accurancy digital signal processing.  Fine quality conversion to achieving fine quality audio.  Low noise microphone preamplifier.  With monitoring function.  Dual power supplies can be switched.  Made of fine quality material for long service time.    Specifications:  MIC INPUT 1-2 (balanced)：  Frequency response: -1/-1 dB, 20 Hz-20 kHz  Dynamic range: 82 dB, A weighting  Maximum input level: +6 dBu  Input resistance: 4 kΩ  Gain range: +3 dB- +60dB  HI-Z INPUT 2 (Unbalanced)  Maximum input level: +3.0 dBV  Input resistance: 1 MΩ  Gain range: 0dB to +40 dB  LINE INPUT 1/2 (balance)  Maximum input level: + 10 dBu  Input resistance: 18.5 kΩ  Gain range: -10 dB - +40 dB  MAIN OUTPUT (Impedance balance)：  Frequency response: -1 / -1 dB, 20 Hz - 20 kHz  Dynamic range: 82 dB, A weighting  Maximum input level: + 6 dBu  Input resistance 100 kΩ  Mobilephones:  Maximum input level: 15 mW + 15 mW, 40Ω  USB：  Technical specifications: full speedUSB 2.0, 24-bit, 44.1kHz/48kHz/88.2kHz/96kHz/176.4kHz/192kHz  XLR INPUT：  Polarity: 1 Grounding 2: Hot wire (+) 3: Cold wire (one)  Power requirements: > 5W  Main color: black  Item size: 180 * 118 * 48mm / 7.1 * 4.6 * 1.9in  Package size: 230 * 138 * 55mm / 9.1 * 5.4 * 2.2in  Package weight: 600g / 1.3lb    Packing List:  1 * Sound Card