A 2x2 microphone preamplifier, with powerful function and compatibility, and a high-speed USB2.0 interface and 24 Bit / 192 Khz audio resolution, can provides perfect recording quality, very suitable for Mic, guitar, bass, computers and other equipment recording. 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 k Gain range: +3 dB- +60dB HI-Z INPUT 2 (Unbalanced) Maximum input level: +3.0 dBV Input resistance: 1 M Gain range: 0dB to +40 dB LINE INPUT 1/2 (balance) Maximum input level: + 10 dBu Input resistance: 18.5 k 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 k Mobilephones: Maximum input level: 15 mW + 15 mW, 40 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