Discriptions: 2-way 2-in-1 Kayimi input 1 channel RCA + card mother line input One way kayi mixed output Normal decoding, Bluetooth, FM radio, digital display, MP3 with remote control 5-band EQ, dynamic compression All the way small square seat power output Large radiator with fan Dadian 4700U/63V*2 Power tube ON Semiconductor MJL21193/MJL21194*1 Functions: Bluetooth ,FM ,digital display ,MP3 with remote control ,treble /Bass