The Azden CAM-3 is a three-channel microphone mixer primarily used with the 3.5mm audio input of cameras and other devices. It allows you to mix the signal of three different sources. Two mono 3.5mm inputs are provided, as is one stereo 3.5mm input. Control the mix of these signals via the three faders, and then send sound along via the 3.5mm output. The device is passive, so it requires no power to operate. It's lightweight at 2.6 oz and includes both a belt clip and a stereo 3.5mm cable for the output.