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ERZhen Professional 4 Channel Wireless Microphone System 4 Handheld Mic with Digital Display

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                  Features:

                  Dynamic expansion circuit,most greatly improving signal -to-noise ratio.
                  Elegant liquid crystal display panel.
                  Metal housing, sturdy and durable.
                  The transmitter adopts balanced and unbalanced sharing socket.
                  Professional audio compression and extension technology to reduce noise and extend frequency range.
                  Stealth antenna for microphone makes mic beautiful and convenient.
                  Occasions: School, Meeting room, Party,stage, family.
                   
                   
                  Specifications: 
                   
                  Modulation method: FM frequency modulation
                  Carrier frequency range: 600MHz-680MHz
                  Maximum frequency deviation: ±45KHz
                  Frequency response: 50Hz-15KHz
                  Signal to noise ratio: >105dB(A)
                  Distortion(1KHz): <0.3%
                  Working temperature: -10℃~55℃
                  Working range: 80M (in ideal environment)
                   
                  Receiver
                   
                  Oscillator mode: PLL(digital frequency synthesizer)
                  Spurious suppression: ≥80dB
                  Image suppression: ≥80dB
                  Sensitivity: 5dBuV
                  Audio output level:
                  Average output( XLR output jack): 250mV/600Ω;
                  Non-average output(1/4 inch output jack): 400mV/3KΩ
                  Working voltage: DC 13.5-16V
                  Working current: ≤800mA
                   
                  Handheld transmitter(Microphone)
                   
                  RF power output: max30 mW(depends on the scope of the country)
                  Oscillator mode: PLL(digital frequency synthesizer)
                  Transmitting frequency stability: <30ppm
                  Dynamic Range: ≥100dB(A)
                  Frequency response: 50HZ-150KHz
                  Maximum input sound pressure: 130dB SPL
                  Microphone cartridge: moving coil
                  Power supply: AA Alkaline battery
                   
                  Package Included: 
                   
                  1 x Recevier
                  4 x Transmitter







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