4 Channel Diversity Wireless Microphone
Carrier Frequency Range:UHF500-960MHZ
Frequency Steadying:±0.05
Mobile State Range:>90dB
Modulation Mode:DQPSK
Frequency Response:40Hz~15KHz
S/N Ratio:≥90dB
T.H.D:<0.5%(1KHz)
F/N Ratio:>80dB
P/N Ratio:>80dB
Audio Output: Detached 0~±300mV Hybrid 0~±200mV
Service Areas:50~100Meters
Temperature Range:-30ºC~50ºC

Product Description:
1.With 8 grade adjustable digital echo. 
2.With adjustable bass/middle/treble.
3.One microphone fit 4 channel or many sets.
4. Many sets use in the same time without interferenc