Check the listing for details. Sony WCS-999 Professional Quality 900MHz Wireless Microphone System. Listed at 30.00 USD. Experience crystal-clear audio with the Sony WCS-999 Professional Quality 900MHz Wireless Microphone System. Designed for demanding applications, this system provides a reliable, interference-free connection between your microphone and receiver. The robust 900MHz frequency ensures a strong signal, making it ideal for events where optimal sound quality cannot be compromised. The Sony WCS-999 is suitable for a variety of settings, from live performances to studio recordings. With its easy-to-use setup and durable construction, this wireless microphone system delivers professional-grade sound without the constraints of wires. Enjoy the freedom to move around on stage or in the studio while maintaining a consistent, high-quality audio feed.