The Shure ADX2/K9 is a premium handheld wireless transmitter that integrates the renowned KSM9 condenser microphone capsule with the advanced features and robust transmission of the Axient Digital wireless platform. This system is engineered for the most demanding professional vocalists and broadcasters who require exceptional audio detail, clarity, and wireless reliability. The KSM9 capsule is a true condenser microphone known for its smooth, natural frequency response and high SPL handling, capturing the full nuance and dynamic range of a vocal performance with studio-quality transparency. It often includes a user-selectable voicing switch, allowing performers to choose between a flat response and a presence-enhanced curve for added cut in a live mix.

The transmitter body houses the sophisticated Axient Digital electronics, providing high-fidelity digital audio transmission with an extremely low noise floor and wide dynamic range. As an "ADX2" model, it supports the full capabilities of the platform, including compatibility with ShowLink for two-way communication and remote control, allowing engineers to adjust transmitter parameters from the mixing console. The system's intelligent spectrum management ensures reliable operation in congested RF environments. Built to rigorous touring standards, the transmitter features a durable metal body, a hardened steel grille, and an intuitive OLED display for monitoring battery and RF status.

Powered by a high-capacity rechargeable lithium-ion battery, the ADX2/K9 is designed for extended use. It represents a synergistic fusion of one of the industry's most respected microphone capsules with state-of-the-art wireless technology, delivering uncompromised audio performance and system control for top-tier applications in major concerts, broadcast productions, and theatrical performances where the highest standard of vocal reproduction is required.