Karaoke Mixer : Dual Microphone, Stereo Music, Stereo Output Click on "Flatmax Studios" above to get the new version of this item. Full metal case, stereo RCA output Runs for days on a 9v battery (battery clip provided), or use wall AC/DC adapter (8.5 to 20v, 2.1 mm positive tip) 2 microphone inputs (can amplify instruments as well - unbalanced lines) stereo RCA input - play from your iphone, android, table, computer, cd player, etc. get the new version : https://www.amazon.com/Karaoke-Mixer-Microphone-Stereo-Balanced/dp/B01H66TT52