4 channels. Pans. Mixes.

This mixer is designed for use with audio signals near the end of the chain. As the name might suggest, it has four channels, each with an input and volume and pan controls. The outputs are on the left and right outside edges of the module, and the middle. The left and right outputs are, as you might expect, connected to the left and right sides of each panner. The middle output is a mono output tied directly to the volume control sliders.