Thank you for viewing this product. This is an AV amplifier made by Yamaha. Power has been confirmed. When I put batteries in the remote control and pressed the buttons, the amplifier seemed to respond. That's all the confirmation I could do, as I don't know how to use it, so I couldn't check any further. Since no other operations have been confirmed, there may be undiscovered defects or missing parts. For the above reasons, I am listing this item as junk. Please bid only if you are able to repair it or use it for parts. Although I am selling this as junk, some people have excessive expectations for the product. Please purchase only if you understand that it is junk. If you do not understand the risks of bidding on junk items, or if you have any concerns about the product, please refrain from purchasing. Shipping will be via Rakuraku Mercari. The item will be wrapped in bubble wrap and shipped in a cardboard box. Please note that I will not respond individually to comments regarding price negotiations. Also, as was recently discussed on social media, there have been some cases of malicious product substitution, so we will not accept any returns. Thank you for your understanding.