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 o. 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