Shure ADX2/B58 Digital Handheld Wireless Microphone Transmitter with Beta 58A Capsule

Product Overview

The Shure ADX2/B58 is a premium Axient Digital handheld wireless transmitter paired with the legendary Beta 58A supercardioid dynamic capsule, built for professional live performance, broadcast studios, and large-scale commercial AV deployments. Featuring ShowLink remote control, AES 256-bit encryption, and a 184 MHz tuning range, the ADX2/B58 gives AV system designers and operators full spectrum flexibility and real-time parameter adjustments from the mixing position. Compatible with all Axient Digital receivers, it supports both Standard and High Density operating modes to maximize channel count in RF-congested environments.

Product Description

The ADX2/B58 is part of Shure's flagship Axient Digital wireless platform, engineered for demanding commercial AV installations and touring productions where RF reliability and audio quality are non-negotiable. The transmitter uses Shure's proprietary digital modulation with selectable 2, 10, or 40 mW RF output power, giving integrators the flexibility to balance range against system density. ShowLink operates over IEEE 802.15.4 in the 2.4 GHz band, enabling real-time adjustments—frequency changes, output power, mute—from Wireless Workbench software without disrupting the audio path. The cast aluminum housing and SB920A rechargeable battery system provide up to 9 hours of runtime at 10 mW, with dockable charging for large inventories. The interchangeable capsule design means operators can swap to a different Shure RPW-series cartridge without replacing the transmitter body, protecting long-term integration investments.

For integrators building out Axient Digital systems, also consider the Shure ADX1 Axient Digital Bodypack Transmitter for lavalier and instrument applications in the same RF ecosystem.

Key Features

• ShowLink Remote Control — Diversity IEEE 802.15.4 wireless link enables real-time frequency changes, power adjustments, and muting from Wireless Workbench without interrupting the audio signal.
• 184 MHz Tuning Range — Wide frequency agility across the full 184 MHz band allows deployment in virtually any RF environment, with manual or automatic frequency coordination.
• AES 256-Bit Encryption — Secure transmission protects audio content in government spaces, corporate boardrooms, and broadcast environments where signal interception is a concern.
• High Density Mode — Channel spacing narrows to 125 kHz (vs. 350 kHz in Standard mode), dramatically increasing the number of simultaneous wireless channels in congested spectrum.
• Selectable RF Output: 2/10/40 mW — Three power levels let integrators optimize for close-range high-density deployments or extended range in large venues.
• Beta 58A Supercardioid Capsule — Industry-standard dynamic capsule delivers consistent gain-before-feedback, SPL handling, and vocal presence for live reinforcement and broadcast.
• SB920A Rechargeable Battery — Lithium-ion rechargeable with precision runtime metering (hours:minutes) and dockable charging via SBC240 or SBC840 chargers; up to 9 hours at 10 mW.
• Interchangeable Capsule System — Compatible with all Shure RPW-series wireless capsules, allowing capsule changes without replacing the transmitter body.
• Rugged Cast Aluminum Housing — Durable construction suitable for rental inventory, touring, and permanent installation environments.
• IR Sync — Quick automated frequency and encryption key transfer between transmitter and compatible Axient Digital receiver via infrared port.

Typical Applications

• Broadcast studio
• House of worship
• Auditorium
• All-hands room
• Government space
• Multi-purpose room
• Conference room

Technical Specifications

Frequently Asked Questions

What receiver is required for the ADX2/B58?
The ADX2/B58 is compatible with all Shure Axient Digital receivers, including the AD4D (dual-channel), AD4Q (quad-channel), and ADX5D (dual-channel with ShowLink access point). Frequency bands must match between transmitter and receiver.

Does the ADX2/B58 work with ULX-D receivers?
No. The Axient Digital system uses a proprietary digital modulation protocol and is not cross-compatible with ULX-D or other Shure wireless platforms. Axient Digital receivers are required.

Can I swap the Beta 58A capsule for a different cartridge?
Yes. The ADX2 transmitter body accepts all Shure RPW-series wireless capsules, including the Beta 87A (RPW120), Beta 87C (RPW122), SM58 (RPW112), KSM9 (RPW184), and others. No tools required.

What is ShowLink and why does it matter for commercial AV?
ShowLink is Shure's proprietary 2.4 GHz remote control link that allows operators to change frequency, adjust output power, rename channels, and mute transmitters from Wireless Workbench software — without physically handling the transmitter. This is critical in live events and broadcast where stage access is limited.

Is the ADX2/B58 compatible with High Density mode for large channel count systems?
Yes. High Density mode reduces channel-to-channel spacing from 350 kHz to 125 kHz, enabling significantly more simultaneous channels in a given frequency band — important for large conference centers, houses of worship, and all-hands spaces running 20+ wireless channels.

What is the warranty on the ADX2/B58?
Shure offers a 2-year limited warranty on the ADX2/B58 transmitter. Contact Creation Networks for warranty service and support options.