Features: The mixer adopts high-end IC module, multiple protection, secure and stable. Excellent circuit design ensures a fine sound quality and stable performance.  Intelligent Power Failure Recovery is a major feature of the mixer, it has multiple functions, such as playback, monitoring and so on. The mixer adopts the advanced soft sound processing technology, avoiding the disadvantage of continuous murmur, ensuring clear sound quality.  The mixer can be connected with an external amplifier, passive and active speakers.  With 3.5mm output, inputs and headphone jacks.  With built-in high capacity rechargeable battery, and charged via the USB jack.    Specifications: Color:Black;  Product Voltage:5V;  Product Capacity:600mAh;  Working Temperature:-10 - 60;  Total Harmonic Distortion:≤1%;  Frequency Response:40Hz-18KHz;  Output Impedance:8 ohms;  Power Supply:DC 5V;  Power Adapter:US plug, input--100-240V 50-60Hz, output--DC 5V;  Item Size:10.6 * 6.9 * 3cm / 4.2 * 2.7 * 1.2in;  Item Weight:128g / 4.5oz;  Package Size:20.5 * 15.5 * 5cm / 8.1 * 6.1 * 2in(L * W * H);  Package Weight:Approx. 325g / 11.5oz;    Package List: 1 * Mixer;  1 * AC Adapter;  1 * USB Power Cable;  2 * 3.5mm Audio Cable;  1 * Storage Bag;  1 * User Manual(English)