Vintage Nikkodo BMB portable karaoke key controller model KN-X1, Karaoke Ninja. 2 Mic inputs and 1 Mic output. Headphone output. Audio in and Audio out. DC input 6 v 150 mA. In box and in very good condition. Box shows wear, has tape and is dirty. Powers up with 2 AA batteries. UNTESTED. NO CONNECTOR CABLES.