• Battery packs may explode or release toxic materials. Risk of fire or burns. Do not open, crush, modify, disassemble, heat above 140°F (60°C), or incinerate.
  • Follow instructions from manufacturer
  • Only use Shure charger to recharge Shure rechargeable batteries
  • WARNING: Danger of explosion if battery incorrectly replaced. Replace only with same or equivalent type.
  • Never put batteries in mouth. If swallowed, contact your physician or local poison control center
  • Do not short circuit; may cause burns or catch fire
  • Do not charge or use battery packs other than Shure rechargeable batteries
  • Dispose of battery packs properly. Check with local vendor for proper disposal of used battery packs.
  • Batteries (battery pack or batteries installed) shall not be exposed to excessive heat such as sunshine, fire or the like
  • Do not immerse the battery in liquid such as water, beverages, or other fluids.
  • Do not attach or insert battery with polarity reversed.
  • Keep away from small children.
  • Do not use abnormal batteries.
  • Pack the battery securely for transport.
  • If water or other foreign objects enter the inside of the device, fire or electric shock may result.
  • Do not attempt to modify this product. Doing so could result in personal injury and/or product failure.
  • Never disassemble or modify the device, as failures may result.
  • Do not subject to extreme force and do not pull on the cable or failures may result.
  • Keep the microphone dry and avoid exposure to extreme temperatures and humidity.

Note: Use only with the included power supply or a Shure-approved equivalent.

AD3 Axient Digital Plug-On Transmitter

The Shure AD3 plugs onto any microphone to transmit wireless audio to compatible Axient Digital AD4D and AD4Q receivers. Supporting both conventional AA and Shure SB900-series rechargeable battery options, the AD3 features a lightweight, rugged, metal chassis that resists sweat, moisture, and debris.

Full Guide Online

Visit www.shure.com for information, resources, and the full version of the product guide.

Included Components

AA alkaline batteries (2) 80B8201
USB-A to USB-C cable 95A39299
Zipper bag 95D2313
Pouch with belt clip 95A44910

Optional Accessories

SB900B rechargeable lithium-ion battery SB900B

AD3 Transmitter Overview

① Display

View menu screens and settings. Press any control button to activate the backlight.

② Infrared (IR) port

Align with the receiver IR port during an IR Sync for automated transmitter tuning and setup.

③ Control buttons

Use to navigate through parameter menus and to change settings.

④ Power switch

Hold the X button to power the unit on or off.

⑤ Enter button

Press to enter menu screens and confirm menu changes.

⑥ Power LED

  • Green = Unit is powered on
  • Red = Low battery, or battery error

⑦ Audio LED

Red, yellow, and green LEDs indicate average and peak audio levels.

The LED will turn red when the limiter is engaged.

⑧ USB-C port

Supplies power or charges Shure rechargeable battery. LED indicates charging status when connected to a power supply.

  • Red = Charging
  • Green = Full charge
  • Yellow = Not charging

⑨ Battery compartment

Requires two AA batteries or Shure rechargeable battery.

⑩AA battery adapter

Use to secure AA batteries. Remove when using a Shure rechargeable battery.

⑪ XLR connector

Connection point for wired microphones, cables, and boom poles, among other things.

⑫ Locking ring

To release the XLR connector, turn the ring counterclockwise and push in.

⑬ Pouch

Provides additional grip and protection for the transmitter.

⑭ Belt clip

Holds transmitter and microphone securely for hands-free carrying.


  1. Open the battery door to install the batteries.
    • AA batteries: Use the AA adapter as shown below. Important: Set the AA battery type for more accurate readings.
    • Shure rechargeable battery: Remove the AA adapter.

  2. Press and hold X to turn on the transmitter.
  3. Select the appropriate input pad or boost to avoid overloading the audio input our add boost to low-output sources: Audio > Pad
    • -12 dB: Use with high output sources, such as line levels and point-to-point applications.
    • Off (default): Use with typical microphones.
    • +12 dB: Use with low output sources.

Setting the AA Battery Type

If using an AA battery, set the battery type for more accurate readings.

  1. Navigate to Utilities and select Battery.
  2. Use the ▼▲ buttons to select the installed battery type:
    • Alkaline = Alkaline
    • NiMH = Nickel Metal Hydride
    • Lithium = Lithium Primary
  3. Press O to save.

Power Over USB

When not using batteries, power the transmitter through the USB C port on the bottom of the unit.

The USB port can simultaneously power the transmitter and charge Shure rechargeable batteries.

Transmitter Controls

X Hold to power on and off or exit a menu without saving changes.
O Enter menu or save changes.
∨∧ Scroll menus and parameter values.

Tip: Hold the button while powering on to enter safe start mode.

Home Screen Display

Use the arrow buttons to select one of the following choices:

  • Name
  • Frequency Setting
  • Group (G) and Channel (C)
  • Device ID
Battery runtime in hours and minutes or bar display
Encryption enabled
Transmitter locked
Standard Transmission Mode
High Density Transmission Mode

Locking the Interface

Lock transmitter interface controls to prevent accidental or unauthorized changes to parameters. The lock icon appears on the home screen when a lock is enabled.

  1. Use the Utilities > Locks menu and choose from the following options:
    • None: The controls are unlocked
    • Power: The power switch is locked
    • Menu: The menu parameters are locked
    • All: The power switch and menu parameters are locked
  2. Press O to save.

Tip: To quickly unlock the transmitter menu, press O and select None.

IR Sync

Use IR Sync to form an audio channel between the transmitter and receiver.

Note: The receiver band must match the band of the transmitter.

  1. Select a receiver channel.
  2. Tune the channel to an available frequency using group scan or manually turn to an open frequency.
  3. Power on the transmitter.
  4. Press the SYNC button on the receiver.
  5. Align the IR windows between the transmitter and the receiver so that the IR LED illuminates red. When complete, Sync Success! appears. The transmitter and receiver are now tuned to the same frequency.

Note: Any change to the encryption status on the receiver (enabling/disabling encryption) requires a sync to send the settings to the transmitter. New encryption keys for the transmitter and receiver channel are generated on every IR sync, so to request a new key for a transmitter, perform an IR sync with the desired receiver channel.


Mic Offset Range

-12 to 21dB (in 1 dB steps)

Battery Type

Shure SB900 series Rechargeable Li-Ion or LR6 AA batteries 1.5 V

Battery Runtime

@ 10 mW

Shure SB900B > 8 hours
alkaline > 7 hours


126 mm x 44.5 mm x 44.5 mm (5.0in. x 1.8in. x 1.8 in.) H x W x D


Without Battery 240 g (8.0 oz.),
with AA batteries 263 g
with Shure rechargeable battery 280 g


Cast Metal

Operating Temperature Range

-10°C (-14°F) to 50°C (122°F)

Storage Temperature Range

-40°C (-40°F) to 74°C (165°F)

Audio Input


3-pin female XLR




Pad -12 dB 26.64 kΩ
0 dB 6.64 kΩ
Boost 12 dB 6.64 kΩ

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 (EIN)

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), cut off frequency selectable from 40 to 240 in 20 Hz increments

RF Output

Antenna Type



50 Ω

Occupied Bandwidth

<200 kHz

Channel-to-Channel Spacing

Standard Mode 350 kHz
High Density Mode 125 kHz

Modulation Type

Shure Axient Digital Proprietary


2 mW, 10 mW, 35 mW

Frequency Bands and Transmitter RF Power

Band Frequency Range (MHz) RF Power (mW)***
G53 470 to 510 2/10/35
G54 479 to 565 2/10/20
G55† 470 to 636* 2/10/35
G56†† 470 to 636 2/10/35
G57 470 to 616* 2/10/35
G62 510 to 530 2/10/35
G63 487 to 636 2/10
H54 520 to 636 2/10/35
K53 606 to 698* 2/10/35
K54△ 606 to 663** 2/10/35
K55 606 to 694 2/10/35
K56◇ 606 to 714 2/10/35
K57△ 606 to 790 2/10/35
K58 622 to 698 2/10/35
L54 630 to 698 2/10/35
P55 694 to 703, 748 to 758, 803 to 806 2/10/35
R52 794 to 806 2/10
JB 806 to 810 2/10
X51 925 to 937.5 2/10
X55 941 to 960 2/10/35
X56††† 960 to 1000 2/10/35

*with a gap between 608 to 614 MHz.

**with a gap between 608 to 614 MHz and a gap between 616 to 653 MHz.

***power delivered to the antenna port.

†operation mode varies according to region. In Brazil, High Density mode is used. The maximum power level for Peru is 10mW.

††Limited to 10mW for Vietnam.

†††Only in UK; F-variant only

△Output power limited to 10 mW above 608 MHz.

◇Korea defines power as conducted (ERP) which is 1dB less then declared in table.



經型式認證合格之低功率射頻電機,非經許可,公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。 第十四條


เครื่องโทรคมนาคมและอุปกรณ์นี้มีความสอดคล้องตามมาตรฐานหรือข้อกำหนดทางเทคนิคของ กสทช.

K55 606-694 MHz

Country Code

Code de Pays

Codice di paese

Código de país


Frequency Range

Gamme de frequences

Gamme di frequenza

Gama de frequencias


A, B, BG, CH, CY, CZ, D, DK, EST, F *
FIN, GB, GR, H, HR, I, IRL, IS, L, LT *
M, N, NL, P, PL, RO, S, SK, SLO, TR *
all other countries *

* This equipment may be capable of operating on some frequencies not authorized in your region. See Licensing Information.

G56 470-636 MHz

Country Code

Code de Pays

Codice di paese

Código de país


Frequency Range

Gamme de frequences

Gamme di frequenza

Gama de frequencias


A, B, BG, CH, CY, CZ, D, DK, EST, F *
FIN, GB, GR, H, HR, I, IRL, IS, L, LT *
M, N, NL, P, PL, RO, S, SK, SLO, TR *
all other countries *

* This equipment may be capable of operating on some frequencies not authorized in your region. See Licensing Information.

K57 606-790 MHz

Country Code

Code de Pays

Codice di paese

Código de país


Frequency Range

Gamme de frequences

Gamme di frequenza

Gama de frequencias


A, B, BG, CH, CY, CZ, D, DK, EST, F *
FIN, GB, GR, H, HR, I, IRL, IS, L, LT *
M, N, NL, P, PL, RO, S, SK, SLO, TR *
all other countries *

* This equipment may be capable of operating on some frequencies not authorized in your region. See Licensing Information.


Licensing: A ministerial license to operate this equipment may be required in certain areas. Consult your national authority for possible requirements. Changes or modifications not expressly approved by Shure Incorporated could void your authority to operate the equipment. Licensing of Shure wireless microphone equipment is the user’s responsibility, and licensability depends on the user’s classification and application, and on the selected frequency. Shure strongly urges the user to contact the appropriate telecommunications authority concerning proper licensing, and before choosing and ordering frequencies.

Australia Warning for Wireless

This device operates under an ACMA class licence and must comply with all the conditions of that licence including operating frequencies. Before 31 December 2014, this device will comply if it is operated in the 520-820 MHz frequency band. WARNING: After 31 December 2014, in order to comply, this device must not be operated in the 694-820 MHz band.

No user-operated control of power, frequency, or other parameters are available beyond those specified in this operating manual.

Please follow your regional recycling scheme for batteries, packaging, and electronic waste.


Certified under FCC Part 15 and FCC Part 74.

Certified by ISED in Canada under RSS-210.

FCC ID: DD4AD3G57, DD4AD3K54, DD4AD3X55. IC: 616A-AD3G57, 616A-AD3K54.

Meets essential requirements of the following European Directives:

  • WEEE Directive 2012/19/EU, as amended by 2008/34/EC
  • RoHS Directive EU 2015/863

    Note: Please follow your regional recycling scheme for batteries and electronic waste

This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.

Hereby, Shure Incorporated declares that the radio equipment is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: http://www.shure.com/europe/compliance

Authorized European representative:

Shure Europe GmbH

Headquarters Europe, Middle East & Africa

Department: EMEA Approval

Jakob-Dieffenbacher-Str. 12

75031 Eppingen, Germany

Phone: +49-7262-92 49 0

Fax: +49-7262-92 49 11 4

Email: EMEAsupport@shure.de

Information to the user

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. This device may not cause harmful interference.
  2. This device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and the receiver.
  • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Canada Warning for Wireless

This device operates on a no-protection, no-interference basis. Should the user seek to obtain protection from other radio services operating in the same TV bands, a radio licence is required. For further details, consult Innovation, Science and Economic Development Canada’s document Client Procedures Circular CPC-2-1-28, Voluntary Licensing of Licence-Exempt Low-Power Radio Apparatus in the TV Bands.

Ce dispositif fonctionne selon un régime de non‑brouillage et de non‑protection. Si l’utilisateur devait chercher à obtenir une certaine protection contre d’autres services radio fonctionnant dans les mêmes bandes de télévision, une licence radio serait requise. Pour en savoir plus, veuillez consulter la Circulaire des procédures concernant les clients CPC‑2‑1‑28, Délivrance de licences sur une base volontaire pour les appareils radio de faible puissance exempts de licence et exploités dans les bandes de télévision d’Innovation, Sciences et Développement économique Canada.

This device operates on frequencies shared with other devices. Consult the Federal Communications Commission White Space Database Administration website to determine available channels in your area prior to operation.

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

  1. This device may not cause interference.
  2. This device must accept any interference, including interference that may cause undesired operation of the device.

L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :

  1. L’appareil ne doit pas produire de brouillage;
  2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.