Amplifiers

Computer Amplifier 1)powered by USB with 5v 1A 2)3.5mm audio input port portable mini usb speaker...

1)Infrared light transmit signal, 2)High Security, 3)Interference Resistence and Against String Frequency IR wireless classroom sound system KS668-A Sound Field Classroom Audio System help’s improve student achievement and reduces teacher’s vocal fatigue. KS668-A...

1)Infrared light transmit signal, 2)High Security, 3)good quality and low price. ...

1)the voice and the hearing results better; 2)It is suitable for classroom holding 50-120 persons; 3)with universal design. IR wireless speaker system...

1)no string frequency 2)It is convenient. 3) Faster connecting.clear sound,anti-interference. KS268-DFUNCTION:1.It is designed by 2.4G frequency band digital frequency-hopping and codec technology to realise non-string frequency, non-interference. The transmitter and the receiver can...

1)Infrared light transmit signal, 2)no string frequency 3)Interference Resistence and Against String Frequency ...

1)the voice results better; 2)suitable for classroom holding 50-120 persons; 3) no string frequency. ...

1)Infrared light transmit signal, 2)no string frequency 3)professional wireless PA system ...

1)Infrared light transmit signal; 2)healthy; 3)the transmitting distance can be 10m. ...

1)Infrared light transmit signal, 2)independent amplifier and passive speaker. 3)no string frequency. IR wireless classroom sound system KS668-A Sound Field Classroom Audio System help’s improve student achievement and reduces teacher’s vocal fatigue. KS668-A...