8-channel USB-connected analog mixer. Features EQ and effect send. In addition to being a mixer, it can also be used as a preamplifier for a digital power amplifier or as an audio interface. Although all detailed operations have not been confirmed, the Mic input, AUX, Main Out, and headphones have been tested and confirmed to be working. There are some minor scratches. Please check the photos. Includes the main unit and power cable only. Everything in the photos is included. Please understand that this is a used item before purchasing.