Description Functions: Mix 4 audio inputs - The audio mixer can connect 4 devices (such as keyboard, instruments, etc. ) to 1/4 inch TS connectors, mix 4 signal inputs into 1 signal output. Adjust the volume - each channel input has its own volume control; turn the knobs to easily control the volume level. Adopt good material - made of metal case, it is solid, durable; the black coating is resistant to rust; there are non-slip silicone pads on the bottom. Take it anywhere - lightweight and compact audio mixer, smaller than the palm of your hand, saves space and allows easy portability. Offers high sound quality - Equipped with a low noise amplification circuit, works well, provides clear sounds without distortion. Technical data: Material: metal electronic components Black color Power adapter: input - 100-240V, output - 12V / 1A Interface: 1 / inch TS connector Input impedance: min. 4.7kΩ Maximum Input Level: 16 dBu Output impedance: approx. 80Ω Maximum output level: 16 dBu Product Size: Approx. 46.5 * 57.2 * 103.6mm / 1.83 * 2.25 * 4.07in Product weight: 370g / 13.05oz Package size: 14 * 9.5 * 7.5cm / 5.51 * 3.74 * 2.95in Package weight: 305g / 10.75oz Audio mixer only, other accessories in the photos are not included. Please read the user manual carefully for more information before use. Due to lighting or other reasons, the picture and material item may be slightly different. Due to manual measurement, there may be deviation, please prevail. Packing list: 1 * audio mixer 1 * power adapter 1 * User Manual