The Shure QLX-D Handheld Transmitter with KSM9HS Microphone is a professional-grade wireless microphone system designed for high-performance audio applications. The KSM9HS capsule offers dual-diaphragm technology with switchable polar patterns (hypercardioid and subcardioid), delivering pristine, natural sound quality and exceptional off-axis rejection, ideal for live sound environments. The QLX-D transmitter provides clear, reliable digital wireless transmission with up to 64 MHz tuning bandwidth, AES 256-bit encryption for secure transmission, and an extended battery life of up to 9 hours with Shure's SB900A lithium-ion rechargeable battery. The system features easy setup with automatic frequency scanning and networked control via Ethernet, making it suitable for demanding professional applications such as live performances, broadcast, and corporate events.