Model KM-1000. Has three wired microphone inputs with separate volume adjustment for each microphone.
Has standard White/Red RCA audio input/output connectors. So I used it with TV A/V connectors (White/Red/Yeallow). This allows playing karaoke DVDs and video files on TV.
You can also take those three wired microphones for free. I've bought them on garage sale for cheap, but they appear to be passive microphones with poor sound quality, so you will likely need some other good set. I used wireless system with this karaoke - that was great.