This product is intended for those with the literacy to repair or maintain it. Please note that this item is sold as-is, with no returns accepted. This is a network-compatible micro component system with a built-in HDD. It can import MD and CD collections to the unit's HDD, and can also transfer them to a computer or external HDD, allowing for use as a music server. https://www.sony.jp/products/systemstereo/M75HD.html I have been using it without issue for a long time, connected to an external amplifier, to play music imported to the HDD and CDs, but I have not confirmed the operation of other functions. ・Only the main unit, remote control, and instruction manual are included; speakers and other accessories are not included. ・The remote control is included, but I have not recently confirmed its operation. It may or may not work. ・The display on the main unit's LCD may be partially distorted during startup and system settings. ・Regarding the built-in MD player, it is possible to switch to MD playback mode, but I have not confirmed the actual playback operation. (I do not own any MDs) The system has been initialized. Approximately 5.6kg SONY NAS-M75HD NETJUKE HDD Component System ※Returns are not accepted. Please understand that this item is sold as-is, with no returns accepted. ※Please understand that this is a used hobby appliance stored at home. ※Cleaning was limited to wiping down the exterior. There are still some stains as I have not done a deep clean. ※The inspection is based on my personal opinion. I have described the item honestly, but there may be differences in individual perceptions, and I may have overlooked something. Please examine the images carefully before purchasing. ※Shipping from the main island of Okinawa. Delivery may be delayed. Please understand. Thank you very much. m(__)m