Shure ADX2FD/K9B Digital Handheld Wireless Microphone Transmitter with KSM9 Capsule

Product Overview

The Shure ADX2FD/K9B is a frequency-diverse digital handheld wireless microphone transmitter with the KSM9 switchable cardioid/supercardioid condenser capsule in a black finish, built for professional broadcast, live performance, and high-end commercial AV deployments requiring studio-quality wireless audio with maximum RF performance. The KSM9 is one of Shure’s flagship handheld condenser capsules, offering switchable polar patterns for adaptable use across different stage and installation environments. Combined with Axient Digital frequency diversity and ShowLink remote control, the ADX2FD/K9B delivers the reliability and audio quality demanded in broadcast studios, government facilities, and large auditoriums.

Product Description

The ADX2FD/K9B combines the KSM9 condenser capsule—switchable between cardioid and supercardioid patterns—with the Axient Digital frequency-diverse transmitter platform, providing versatile, high-quality audio for both controlled broadcast environments and live commercial productions. Frequency diversity transmits on two independent RF paths simultaneously, enabling the system to maintain audio continuity in the most congested RF environments without engineer intervention. ShowLink technology allows remote control of transmitter parameters from Wireless Workbench 6 or ShurePlus Channels without interrupting a live production. High Density mode maximizes simultaneous channel count in spectrum-constrained deployments. Available in black finish in the G57 band (470–616 MHz), compatible with the Shure AD4DNP Two-Channel Receiver or Shure AD4QUS Four-Channel Receiver.

Key Features

• Frequency-Diverse Transmission — Transmits simultaneously on two independent RF frequencies for automatic interference avoidance in high-demand commercial and broadcast environments.
• KSM9 Switchable Condenser Capsule — Flagship condenser capsule with switchable cardioid and supercardioid polar patterns, providing flexibility across broadcast, live vocal, and installed commercial AV applications.
• ShowLink Remote Control — Remote management of frequency, gain, and RF status via Wireless Workbench 6 or ShurePlus Channels iOS app without interrupting live audio.
• Standard and High Density Modes — HD mode supports higher simultaneous channel density in large commercial and broadcast deployments.
• Black Finish — Professional black finish for broadcast and stage environments where discrete hardware is preferred.
• Wide Tuning Range — Broad frequency agility within the G57 band for effective RF coordination in congested environments.
• Axient Digital Receiver Compatibility — Compatible with all Axient Digital AD4D and AD4Q receivers.

Typical Applications

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

Technical Specifications

Frequently Asked Questions

What makes the KSM9 capsule suitable for professional broadcast and commercial AV?
The KSM9 is one of Shure’s flagship condenser capsules, offering switchable cardioid and supercardioid polar patterns. This flexibility allows AV integrators and engineers to adapt the microphone’s pickup pattern to the specific environment—broader coverage for presentations or tighter rejection for broadcast vocal applications.

Is the ADX2FD/K9B compatible with existing Axient Digital receivers?
Yes. It is compatible with all Axient Digital AD4D and AD4Q receivers in Standard and High Density modes.

How does frequency diversity benefit a live commercial AV installation?
By transmitting simultaneously on two independent RF frequencies, the ADX2FD/K9B maintains audio continuity if one frequency is blocked or interfered with. This automatic protection eliminates the need for engineer intervention during critical live events, corporate presentations, or broadcast productions.