Shure AD4Q-US Axient Digital Quad-Channel Wireless Microphone System with Four AD2/B58A Handheld Transmitters (G57: 470 to 616 MHz)

The Shure AD4Q-US Axient Digital Quad-Channel Wireless Microphone System with Four AD2/B58A Handheld Transmitters is a complete, high-performance solution designed for live sound, broadcast, and corporate presentations, where reliable RF performance and pristine vocal clarity are essential. Centered around the AD4Q-US four-channel receiver, this system delivers transparent digital audio, secure transmission, and dependable operation for demanding, high-channel-count environments.

Operating across a 166 MHz ultrawide UHF bandwidth (470 to 636 MHz), the receiver enables streamlined frequency coordination with support for up to 120+ simultaneous channels in standard mode, while High Density mode maximizes efficiency in spectrum-constrained environments. True digital diversity reception and advanced interference detection maintain stable, uninterrupted audio, and AES-256 encryption ensures secure transmission for high-profile applications.

This configuration includes four AD2 handheld transmitters equipped with Beta 58A supercardioid dynamic capsules, designed for close-up vocals, with brightened midrange and bass roll-off to control proximity effect. The capsule features a supercardioid polar pattern that ensures high gain before feedback, maximum isolation from other sound sources, and minimum off-axis tone coloration. The interchangeable capsule design also allows for quick adaptation to different applications using a range of compatible Shure capsules.

The AD2 transmitters offer automatic gain adjustment, selectable 2/10/35mW RF output power, and flexible transmission modes to balance coverage and channel count. Built with durable, moisture-resistant aluminum housings, they provide up to 11 hours of operation with optional SB900C rechargeable batteries, along with intelligent charging and remote monitoring capabilities. A backlit LCD and intuitive controls allow quick access to key settings, while IR sync simplifies setup.

With Dante/AES67 networking, XLR and AES3 outputs, and comprehensive remote control via Ethernet and Wireless Workbench, this Axient Digital system is engineered to streamline workflow while delivering consistent, high-quality wireless performance in critical professional environments.

The Shure AD4Q-US is a 4-channel wireless receiver housed in a rugged, single-rack unit complete with cable and mounting accessories. Part of the Axient Digital system, it delivers mission-critical signal stability and clear, transparent sound for professional productions that demand flawless execution.

Every feature has been stress-tested to enable seamless, uninterrupted audio in high-profile applications such as televised live performances, award shows and corporate events, the Broadway stage, secure government installations, and state-of-the-art meeting and training facilities.

The AD4Q-US operates in a single 166-MHz ultrawide bandwidth that encompasses the entire usable UHF range from 470 to 636 MHz. Quadversity mode allows placement of two pairs of antennas in different zones or doubling antennas in one zone. The Dante Cue and Dante Browse features enable high-fidelity headphone monitoring from any connected Dante-enabled device.