Features 1、4 IN 1 OUT: Stereo 4 way audio inputs are mixed into 1 way stereo output, which can directly drive headphones or connect to a power amplifier. 2、HIGH CURRENT: The quiescent current is about 15mA, and the maximum driving current is 70mA, which can easily drive various audio equipment. 3、STANDARD JACK: With 3.5mm headphone socket, the potentiometer controls the volume of each channel independently without affecting each other. 4、EASY OPERATION: This stereo audio mixer requires a power supply(not included), with good practicality and simple to use. 5、ALUMINUM SHELL: The audio mixer adopts sturdy aluminum alloy shell, which is wear resistant, has strong anti interference. Specification Item Type: Audio Mixer Product Material: ABS, aluminum alloy Quiescent Current: 15mA Maximum Drive Current: 70mA Working Power: DC 5-12V Socket Size: DC5.5*2.1mm Package List 1 x Audio Mixer