Elevate your conference and meeting experiences with our Wireless 621.5MHz-643.7MHz Handheld 4 Channels Microphone. Designed for professional settings, this microphone system offers superior sound quality and advanced technology to ensure seamless communication. Advanced Circuitry: Equipped with a suppression circuit and shock elimination circuit during switching, this microphone utilizes anti-return circuit slow-change output control technology. The integration of computer EDA and analog online auxiliary design ensures optimal performance and reliability. Independent Channel Control: Each of the four channels features independently adjustable volume, providing a 1+4 audio output configuration. This allows for simultaneous use by stacking up to five different frequency points, offering flexibility and versatility in various settings. Cutting-Edge Technology: Incorporating high-efficiency, low-loss RF emission technology and the SMT production process from the United States, this microphone system uses a locking frequency better than 10ppm quartz crystal. It also features dynamic audio compression, an expansion circuit, and image frequency technology for superior audio clarity. Enhanced Sensitivity and Stability: Building on original microphone technology, this product includes several unique domestic innovations that enhance ultra-high sensitivity, strong anti-interference capabilities, and excellent stability, ensuring clear and uninterrupted communication. User-Friendly Operation: With a fixed frequency, this microphone is ready to use at boot, offering convenience and ease of use for any user, making it ideal for quick setups and efficient operation. Upgrade your audio setup with our Wireless 4 Channels Microphone, designed to deliver exceptional sound quality and reliability for all your professional needs.