DIGITAL KEY CONTROL DVD/DIVX KARAOKE PLAYER W/USB/SD/HDMI Multi-format disc player supports DVD, DivX, VCD, CD+G, Mp3, Photo-CD and CD/DVD+-R formats for unparalleled media entertainment compatibility USB and SD, MMC, MS card readers to access your library of digital files HDMI output for compatibility with the latest TVs and receivers Dual 1/4" microphone inputs with individual volume controls Built-in Echo effect for a more professional vocal sound Progressive scan player Direct track access for immediate song selection and playback ±8 step digital key controller for changing the key of the music to fit your vocal range via remote or front panel Built-in Dolby Digital (AC-3) and Dolby 2.1CH decoders for cinema sound quality Full function remote control for ease of operation of all system features Includes rack mount adapters 120V/240V and NTSC/PAL compatible for worldwide use