*Built in MP3 player module and support Bluetooth.
*Optional rated power output including 20W, 40W and 60W.
*Hifi sound quality; support constant impedance speaker output of 4 to 16 ohm and constant *voltage speaker output at 100V.
*Mic input is in type of standard 6.3 mic jack; Line input is adopts RCA.
*Circuit protection for short, overload and over heat.