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Shure ADX3 plug-on transmitter with ShowLink, incl. 2x SB900B rechargeable battery, protective pouch with belt-clip and USB cable

Shure Axient Digital ADX series transmitters deliver impeccable audio quality and RF performance and are equipped with ShowLink remote control for realtime parameter adjustments and interference avoidance. the Shure ADX3 plug-on transmitter transforms any microphone into an advanced, portable Axient Digital ADX series wireless microphone with wide-tuning, high density (HD) mode, encryption, and advanced rechargeability.

ADX3 features a patented locking mechanism for secure, wobble-free connection and supports both conventional AA and Shure SB900-series rechargeable batteries. the ADX3 is housed in a lightweight, rugged, metal chassis and is designed to resist sweat, moisture, and debris.


  • Axient Digital ADX Series wireless plug-on transmitter
  • showLink enabled for comprehensive, real-time control of all Axient Digital transmitter parameters from the mix position
  • patented locking mechanism for secure, wobble-free connection
  • OLED display with easy-to-navigate menu and controls
  • rugged metal construction that is resistant to dust and moisture
  • automatic input staging optimizes gain setting
  • AES 256-bit encryption-enabled for secure transmission
  • 300 feet (100 meter) line-of-sight operating range
  • selectable modulation modes optimize performance for spectral efficiency: Standard (optimal coverage, low latency) and High density (dramatic increase in max system channel count)
  • switchable power levels (2/10/35 mW, region dependent)
  • Shure SB900B rechargeable battery (included)
  • Shure SB900B lithium-ion rechargeable battery option provides up to 6.5 hours of continuous use (depending on configuration and use), precision metering, and zero memory effect
  • external power and charging option over USB-C port


  • 2 x SB900B batteries
  • USB-A to USB-C cable
  • belt clip/pouch
  • zippered bag for storage

Mic Offset Range: -12 to 21 dB (in 1 dB steps)
Battery Type: Shure SB900-series rechargeable li-ion or LR6 AA batteries 1.5 V
Battery Runtime: Shure SB900B: >6 hours / Alkaline: >5 hours
Dimensions: 126 x 44.5 x 44.5 mm
Weight: 240 g without batteries / 263 g with AA Batteries / 280 g with SB900B
Housing: cast metal
Operating Temperature Range: -14 to 122 °F (-10 to 50 °C) / note: battery characteristics may limit this range
Storage Temperature Range: -40 to 165 °F (-40 to 74 °C) / note: battery characteristics may limit this range
Connector: 3-pin female XLR
Configuration: balanced
Impedance: Pad (-12 dB): 26.64 kO / 0 dB: 6.64 kO / Boost (12 dB): 6.64 kO
Maximum input Level - 1 kHz at 1% THD: Pad (-12 dB): 21 dBV / 0 dB: 9 dBV / Boost (12 dB): -3 dBV
Preamplifier Equivalent Input Noise System Gain Setting =+20: -115 dBV A-weighted, typical
Phantom Power: +48 V (7 mA maximum) / +12 V (15 mA maximum)
High Pass Filter: Two-pole (12 dB per octave), cutoff frequency selectable from 40 to 240 Hz in 20 Hz increments)
Antenna Type: Dipole
Impedance: 50 omega
Occupied Bandwidth: <200 kHz
Channel-to-Channel Spacing: Standard Mode: 350 kHz / High Density Mode: 125 kHz
Modulation Type: Shure Axient Digital Propietary
Power: 2 mW, 10 mW, 35 mW / varies by region. See Frequency Range and Output Power Table.
Specific Absorption Rate (SAR): <0.1 W/kg
Showlink Network Type: IEEE 802.15.4
Showlink Antenna Type: Dipole
Showlink Frequency Range: 2.4000 to 2.4835 GHz (16 Channels)
Showlink RF output Power: 10 dBm (ERP) - varies by region

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