The supply voltage of the AU-G202 is DC5-18V, the quiescent current is about 40mA, the output impedance is 16ohm-600ohm, and the output power is 900mw*2/32ohm Its connectors are 3.5mm stereo sockets. With either input, it supports two-way output. In addition, it supports two-way input and mixed output. Two input ends can input two different audio sources at the same time. The audio sources can be plugged in at the same time and will not affect each other. The output ends can be connected to two headphones or two amplifier speakers at the same time. Attention:The product can only eliminate interference generated by common ground, but cannot eliminate noise caused by other causes. Weight of main unit:91g/0.2lb Colour:Black Material:Plastic Size:about 6.4 x 6.3 x 2.5cm/2.5 x 2.5 x 1inch Package Contents: 1 x AU-G202 Audio Mixer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.