karaoke Speaker AUX/PC Input, Bass, treble adjust separately ... adjust function 3 lines of treble, midrange , bass speaker driversAchieve the perfect playback of the timbreShort circuit protectionSpecification:Rated ... /N Ratio(A weighted): =75dBTHD (1W): :0.1%Speaker Drivers: 2×6.5"+1×1"Sensitivity: 86dB (1m, ... foreign country,is specialized in 5.1 2.1 speaker.amplifier.DVD etc. not only do OEM AND ODM ...