The Q-Audio QSD-3PRO range represents the next generation of professional silent audio technology, engineered for reliability, flexibility, and high-quality performance across a wide variety of applications. Designed with both entertainment and corporate environments in mind, the range includes advanced 3-channel headphones alongside a selection of robust UHF transmitters, including Bluetooth and battery-powered options. Operating within the licence-free CH70 spectrum (863865 MHz), the QSD-3PRO range offers interference-free audio transmission, multi-source compatibility, and scalable solutions ideal for silent discos, conferences, wellness classes, guided tours, and more. With user comfort, ease of setup, and portability at its core, QSD-3PRO delivers professional-grade silent audio wherever it's needed.