I am selling this item because I have kept it in storage since I purchased it. If you have any questions, please leave a comment. The items in the images are all that are included in the sale. Thank you for your interest. Description: This is a set of a Carrozzeria (Pioneer) "DEQ-P7" 5.1ch Digital Processor and an "AXM-P7" Audio Master Control Unit. This is a DSP system that enables high-quality surround sound playback in your car. The AXM-P7 controls the DEQ-P7, and a multi-channel configuration including optical digital input is possible. By combining it with a DVD player or an IP bus-compatible unit, you can build an immersive 5.1ch sound system.