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Shure ADX3 Axient Digital Wireless Plug-On Transmitter (G57: 470 to 616 MHz)

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Questions about this product?
  • For Axient Digital Receivers
  • Use with Any Handheld or Shotgun Mic
  • ShowLink Remote Control
  • Secure XLR Connector with Phantom Power
  • Automatic Gain Adjustment
  • 2/10/35mW RF Output Power
  • OLED Screen
  • Secure AES-256 Encryption
  • HD Mode for Higher Channel Counts
  • 6.5 Hrs with SB900B Rechargeable Battery

The Shure ADX3 Axient Digital Wireless Plug-On Transmitter (G57: 470 to 616 MHz) automatically avoids interference and enables real-time remote control of settings. The ADX3 includes a secure twist-lock XLR connector and offers the flexibility of supplying 12 or 48V phantom power, making it compatible with various handheld or shotgun XLR microphones for use with the Axient ADX digital wireless system.

The Shure ADX3 Axient Digital Wireless Plug-On Transmitter (G57: 470 to 616 MHz) operates in a single 146 MHz ultrawide UHF bandwidth with selectable 2/10/35mW RF output power and a transmission range up to 330'. A special HD (high density) mode provides a dramatic increase in channel count when you're running numerous mics at the same time. The transmitter provides up to 6.5 hours of operation on a Shure SB900B rechargeable lithium-ion battery (included) or 5 hours on two AA batteries. A USB-C port is supplied for recharging and powering and a USB-C to USB-A cable, pouch with belt clip, and zippered storage bag are included.

With a durable, moisture-resistant, lightweight aluminum housing, the ADX3 transmitter delivers pristine audio quality and RF performance, AES 256-bit encryption for secure transmission, and advanced rechargeability options, making it ideal for high-profile, sound-reinforcement applications.

ShowLink Enabled for Interference Avoidance & Parameter Control

  • ShowLink technology allows the ADX transmitter to execute an automatic, synchronized frequency change in a matter of milliseconds, ensuring clean, uninterrupted transmission, even in the most challenging RF environments.
  • You can also make instantaneous remote adjustments to your ADX transmitter settings (RF output, gain, mute, and more) when it is difficult or impossible to access the transmitter.

Use Any XLR Mic with Axient Digital Wireless

  • With its ability to supply 12 or 48V phantom power and a custom, fast, and secure XLR connector design, the ADX3 is ready to accommodate any handheld or shotgun XLR microphone.
  • The unit offers a -12 dB Pad for loud sources and can accommodate line-level inputs from a variety of sources.

User-Friendly Features in a Rugged Housing

  • The unit quickly syncs with an Axient wireless receiver via infrared at the touch of a button.
  • Automatic Gain adjusts the mic input level for you.
  • The power button conveniently doubles as mute switch, while preserving RF lock.
  • Frequency and power lockout functions prevent accidental or unauthorized changes during events.
  • A crisp OLED screen along with an easy-to-navigate menu and controls let you quickly access frequency, group, and channel settings, along with lock status, and RF output. Remaining battery life is also clearly displayed.
  • Offset function lets you balance mic levels when assigning multiple transmitters to a single receiver slot. Adjustment range: -12 to +21 dB.
  • Remove unwanted low-end with the 12 dB per octave high-pass filter featuring an adjustable cut-off frequency selectable from 40 to 240 Hz in 20 Hz increments.
  • 2/10/35mW selectable RF output power allows you to increase either the transmitter's range or the number of mics operating simultaneously.
  • Two transmission modes: Standard for optimal coverage and High-Density for maximum system channel count and robust coverage.
  • The ADX3's rugged metal construction is resistant to dust and moisture.

Convenient Power Management Options

  • Operates for up to 6.5 hours on the SB900B rechargeable lithium-ion battery.
  • The included SB900B batteries offer intelligent power management with precision metering in hours and minutes and zero memory effect.
  • USB-C port for battery charging and powering.
  • SBC200 two-bay and SBC800 8-bay chargers are available separately.
In the Box
  • Shure ADX3 Axient Digital Wireless Plug-On Transmitter (G57: 470 to 616 MHz)
  • 2 x Shure SB900B Rechargeable Lithium-Ion Battery for Bodypack Transmitters/Receivers
  • Pouch with Belt Clip
  • USB-Type C Cable
  • Zipper Bag
  • Limited 2-Year Manufacturer Warranty
More Information
Product ConditonNew
RF Frequency Band

417 to 616 MHz

RF Bandwidth

166 MHz

Frequency Step Size

25 kHz

RF Channel Scanning


Max Operating Range

328.1' / 100 m (Line of Sight)

Built-In Recorder


Timecode Support


Mobile App Compatible



3.2 ms


AES 256




Transmitter Type


RF Output Power

2 / 10 / 35 mW

Audio I/O

1x XLR 3-Pin Female Balanced Input (Locking)

Included Cable Connector


Phantom Power

+12 V +48 V


12 dB


Off/On Switch

Audio Input Level

(Mic Level)

Auto-Level Control


Gain Range

-12 to +21 dB (3 dB Steps)

Signal Processing


Frequency Response

20 Hz to 20 kHz

Sync Method



1x Sleeve Dipole (Handheld)

Approximate RF Sensitivity

10 dBm

Power Requirements


Battery Type

1x Shure SB900B (Included, Replaceable) 2x AA (Not Included)

Approx. Battery Life

Med.: 6.5 Hours (Lithium) Med.: 5 Hours (Alkaline)

USB/Lightning I/O

1x USB-C (Bus Power, Charging)

Display & Indicators

1x OLED (Battery Status, Channel, Group, Signal Strength)



Operating Temperature

-40 to 165°F / -40 to 73°C


1.8 x 5" / 44.5 x 126 mm


8.5 oz / 240 g (without Batteries)

Packaging Info

Package Weight

1.55 lb

Box Dimensions (LxWxH)

12.1 x 4.9 x 3.4"

WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov
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