True graded wireless one-to-four headset microphone

Product Description:The product features a super-directional high-capacitance microphone capsule, offering excellent sound quality and frequency response.It uses a locking and sturdy detachable structure to ensure highly reliable performance.The independently designed new base makes it an ideal device for high-level conference projects with demanding requirements.It has a wide frequency response, clear and transparent sound quality, low noise, and an ultra-long lifespan for microphone ON/OFF.When the microphone is turned on, the red indicator light on the capsule illuminates.The gooseneck and base can be separated, suitable for large, medium, and small conferences, public broadcasting, teaching, speeches, and other occasions.ID code identification prevents external interference and impact.Main Features:* Uses the UHF 640~830MHz frequency band, with PLL frequency synthesis phase-locked loop technology. The frequency is adjustable, up to 5 sets can be used simultaneously without interference.* Integrated CPU control, coupled with a digital LCD interface for easy operation and excellent performance.* Multi-stage narrowband RF and IF filtering to fully eliminate interference signals.* Uses audio compression and expansion technology, greatly reducing noise and increasing dynamic range.* The receiver uses multi-stage RF amplification, providing extremely high sensitivity.* Ideal operating distance is 80 meters.Receiver Specifications:Operating Frequency: 640~830MHz (adjustable per requirements)DC Input Voltage: DC12V 1200mAOscillation Mode: Dual phase-locked frequency synthesis (PLL)Modulation Mode: FMMaximum Frequency Deviation: ±50KHzFrequency Response: 60Hz～18,000HzSignal-to-Noise Ratio: ≥89dBLow-Frequency Attenuation: 125Hz 6dBOutput Impedance: 250ΩMaximum Sound Pressure: 135dB SPL 1KHz at 1% T.H.DDynamic Range: ≥105dBS/N Ratio: >98dBT.H.D Distortion: <0.5%