This is a Marantz 11.2 Dolby Atmos 4k Processor. This is a separate which means you have to power your speakers thru external amps, this does the switching decoding,etc. I am the original owner, bought new from Amazon. It is in excellent working condition, and only has a few scratches which are shown in the pictures. They are minor and do not effect functionality. This unit will come with the processor itself, power cord, back lit remote control, and the audysey xt32 setup mic. It will ship in original box. Reasonable offers will be considered. I have been buying and selling on ebay for over 20 years, with 100 percent feedback. So be rest assured, with your purchase from me. Any questions, feel free to contact. Thanks Here is the link to online manual. https://www.marantz.com/en-us/product/av-separates/av7703