This is a multi-player that replicates a club-like environment at home. It features the same layout and functions as the club-standard CDJ-2000NXS player, and is also compatible with the music management software rekordbox™, enhancing its compatibility with clubs. In addition to USB storage devices and CDs, it can also be used as a MIDI controller to control DJ software, and supports the file formats MP3, AAC, AIFF, and WAV. It is compatible with the free music management software rekordbox™, allowing for song analysis, playlist creation, and setting of CUE and LOOP points, enabling comfortable and versatile performance. You can use the TAG LIST to prepare songs you want to play during playback. You can also rearrange the order of songs in the TAG LIST and save them as playlists back in rekordbox™. The display can show a waveform display, allowing you to visually grasp the overall flow and intensity of the song, and quickly move to any playback point. Features a club-standard layout. - Brand: Pioneer - Model: CDJ-850 - Connection Terminals: USB, CONTROL, AUDIO OUT - Condition: Used - Accessories: Power cable Thank you for viewing. There are scratches and dirt from use, but all functions are normal and can be used without any problems. Cleaning and pickup cleaning were performed before listing. Both USB and CD sound output normally, and all switches and functions have been confirmed to work without any problems, so you can use it immediately. I am selling it to organize my equipment. There are scratches from when it was fixed to the CDJ stand, and fine scratches and dirt on the jog dial, so please judge from the photos, and refrain from purchasing if you are sensitive to such details. Selling at a low price. First come, first served. No claims, no returns. Thank you. I will also consider selling it as a set with other CDJs I have listed, so please comment.