... 3.Power:2*50W,6.5inch active speaker 3 in 1 Active Loudpeaker,3 in 1 Bluetooth Active Speakers This integration of amplifier ... and loudspeaker is known as active loudspeaker.And we use this kind of loudspeaker,do not ... use other amplifier please!Feature/Function:Type: Compact two-way active systemWoofer:6.5"(166mm) woofer; 1.0"(25.4 mm ...