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Wireless In-Ear Monitor System

U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.

  • Overview
  • Features
  • Configurations
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview

    The M2 Wireless In-Ear Monitor System is designed to make professional in-ear monitoring features accessible for performers who want to be free from the problems associated with floor wedges. The stereo monitor system offers Personal Mix Control, which gives each musician volume and mix control of two independent signals on stage, via easy-to-use controls on the M2R stereo body-pack receiver. The wireless UHF M2T Stereo Transmitter provides a choice of 100 selectable frequencies and is equipped with two XLR/¼” combo input connectors into which users can connect line-level inputs. While up to 10 complete M2 systems may be used on stage simultaneously, any number of M2R stereo receivers may be used on the same frequency with a single M2T stereo transmitter. These rugged systems are built to stand up to the inevitable bumps of life on the road, delivering clear, natural sound for touring and installed-sound uses.
  • Features

    • High-fidelity sound with clean, articulate mix allows you to hear yourself better at lower volume

    • 100 selectable UHF channels

    • Up to 10 simultaneous systems per frequency band

    • Three receiver modes: Personal Mix, stereo, and mono

    • Personal Mix Control allows volume and mix control of two independent signals at the receiver

    • 3.5 mm line-in jack connects to ambient microphone, click track & more

    • LED indicators provide easy-to-read level monitoring

    • XLR loop output (true pass-through) connects signal to mixing console, additional IEM system or recording device with no signal degradation

    • Adjustable squelch eliminates annoying static

    • Pilot tone protects against RF interference when the transmitter is turned off

    • Limiter (defeatable) helps protect your hearing from sudden peaks

    • Portable system is quick to load and set up

    • Reduces on-stage audio clutter for better overall mix & less feedback

    • Use any number of M2R Stereo Receivers (with Personal Mix Control) on the same frequency

    • Audio-Technica earphones with proprietary dynamic drivers offer full frequency response and outstanding isolation

    • Personal fit with 3 sizes of rubber eartips plus ear-conforming foam tips

    • Auxiliary input offers connection point for ambient microphone, click track, or other mic- or line-level input.

    M2 Components
    EP3 Headphones
    In-ear dynamic headphones offer high-fidelity sound and excellent isolation
    M2T Stereo Transmitter
    Wireless UHF transmitter (frequency-agile) offers 100 user-selectable frequencies
    M2R Stereo Receiver
    Personal Mix Control in a lightweight body-pack

    M2 Optional Accessories
    AM3 Omnidirectional Condenser Lavalier Microphone
    AT8623 Joining Plate
    EP1 In-ear Headphones

    Compare the M2 & M3 Wireless In-Ear Monitor Systems.

    Why choose in-ear monitors?
  • Configurations

    Wireless M2T stereo transmitter, M2R stereo receiver with 3.5 mm line-in jack and EP3 in-ear dynamic headphones with 3 sizes of rubber earpieces plus ear-conforming foam tips.
    Body-pack stereo receiver for use with Audio-Technica M2L and M2M Wireless In-ear Monitor Systems. Includes EP3 in-ear dynamic headphones, extension cable/adapter with 3.5 mm connector, interchangeable earpieces (Small, Medium & Large), ear-conforming foam tips, soft pouch.
    Stereo transmitter for use with Audio-Technica M2L and M2M Wireless In-ear Monitor Systems. Equipped with two XLR/¼" combo input connectors. Includes AC adapter (country dependent) and rack mount adapters.
  • Specifications

    Operating Frequencies Band L: 575.000 to 608.000 MHz, 100 frequencies

    Band M: 614.000 to 647.000 MHz, 100 frequencies DISCONTINUED IN NORTH AMERICA

    Not all frequency bands available in all areas. Please check with local regulations.
    Minimum Frequency Step 25 kHz
    Modulation Mode FM stereo
    Maximum Deviation ±40 kHz
    Dynamic Range 90 dB (typical), A-weighted
    Total Harmonic Distortion <1% at (1 kHz, ±20 kHz Deviation)
    Operating Range 100 m (300'), typical
    Open range environment with no interfering signals.
    Operating Temperature Range -5° C (23° F) to +50° C (122° F)
    Battery performance may be reduced at very low temperatures.
    Frequency Response 60 Hz to 13 kHz (+/- 3 dB)
    Simultaneous Use 10 channels per band (maximum recommended)
    For assistance with multi-band operation or other frequency coordination issues, please contact your local Audio-Technica customer service representative.

    Receiving System Double conversion superheterodyne
    RF Sensitivity 20 dBuV (at 60 dB S/N ratio, 50 ohms termination)
    Headphone Output Connector 3.5 mm TRS stereo phone jack
    Headphone Output Power 65 mW (at 32 ohms)
    Antenna Input SMA-type, 50 ohms
    Aux Input Connector 3.5 mm TRS stereo phone jack
    Batteries 2 x 1.5V AA (not included)
    Battery Life 8 hours (alkaline)
    Depending on battery type and use pattern
    Dimensions 70.0 mm (2.76") W x
    25.0 mm (0.98") D x
    110.0 mm (4.33") H
    Net Weight 110 g (3.9 oz), without batteries
    Accessories Included EP3 earphone; frequency sticker; flexible antenna

    RF Power Output10 mW/30 mW (switchable internally), 50 ohms
    Limited to 10 mW within 863 MHz to 865 MHz
    Following national regulations
    Spurious EmissionsFollowing federal and national regulations
    Input ConnectionsXLRF-type/6.3 mm stereo (1/4") combination connector
    Pin 1 and Sleeve: Ground
    Pin 2 and Tip: Hot
    Pin 3 and Ring: Cold
    Maximum Input LevelXLRF-type/6.3 mm stereo, (1/4") balanced: +26 dBu
    6.3 mm (1/4") mono, unbalanced: +26 dBu
    Loop Output ConnectorXLRM-type connector
    Pin 1: Ground
    Pin 2: Hot
    Pin 3: Cold
    Power Requirement12-18V DC, 600 mA
    AntennaAttached whip
    Dimensions210.0 mm (8.30") W x
    132.0 mm (5.20") D x
    44.0 mm (1.70") H
    Net Weight870 g (30.7 oz), without accessories
    Accessories IncludedAC adapter (country dependant); rack mount adapters

    Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at

  • Downloads

    M2 Wireless In-Ear Monitor System Manual (pdf 2.37 M)
    M2 System Submittal Sheet (pdf 156.01 KB)
    Wireless Mics & Cables
    Wireless System Accessories
    Using Wireless
  • Reviews

    The M2 is by far the best in-ear monitor system for the mone


    I'm the soundman for a classic rock band that plays 3-4 times a month. We all work day jobs and only have 45 minutes to an hour for setup and sound check at various local clubs and sports bars. The stages are way too small and we have to be careful not to disturb the patrons who are eating and watching sporting events before we start our shows. Conventional monitors were out of the question because of the size, setup/ equalization time and poor acoustical conditions so in-ear monitors were the best solution. We use 3 M2 systems that have worked flawlessly for almost 2 years now. The bass player even dropped one of the recievers hard and bent the concentric pot but I was able to easily take it apart and bend it back with no problems. The mix mode allowed me to send 1 aux mix from the board and a direct out from each singers channel to the transmitter that way they could turn up the vocal at their recievers and leave me alone to concentrate on the main mix. Having a low stage volume is critical to getting a great main mix when you play in small or poor acoustical venues and the M2's allow for not only a better monitor mix but a much cleaner main mix for the audience to enjoy. I really miss the M2 in-ear monitors when I mix other bands and have to use their sound system with traditional floor monitors. If you want an upgrade to your sound system and a superior monitor system to floor monitors run out to your LOCAL Audio Technica Dealer and get the M2 in-ear system!

    Atlanta, GA, USA

    Solid, Always ON Sound


    I've had my M2s for over a year now, and they are rock solid. I can't imagine being on stage without them. Was very easy to adjust all the settings to get an optimal mix and level between vocals and instruments balanced between left and right ears.The health of my voice and ears now owes much to A-T. I use them 2-3 times per week, and am very impressed with the comfort and feel of the buds. I thought I would have to shell out for custom buds, but after each time I use them, it becomes less and less a desire. They sound great and the noise cancelling is very good. I've added an ambiance mic when solo, which really makes a difference interacting with a crowd I can hear. Once you experience the M2, I doubt you will ever wedge again. Just walk out of that sweet spot of a floor monitor and you'll understand that will never happen with the M2.

    Roseville, CA, USA

    Just what I needed....


    Since going to a quite stage at our church I needed the best in-ear monitoring possible and went with custom molded monitors by Westone. Therefore, I needed a quality wireless system to complete my setup. I found everything I needed and more in the Audio Technica M2 system. I couldn't be more pleased with the value I received for the money I invested. I literally took it out of the box, plugged it in, installed batteries, turned it on and it worked! I guess I could have spent a lot more money, but I'm not real sure as to what I would have accomplished other than having less monney in my pocket. Thanks AT, Terry

    Monroe, LA, USA

    M2 Wireless In-Ear Monitor System

    5.0 3


  • Q & A

    I am touring the European Union this spring and wondering if my M-band M2 setups will work/is that frequency band legal for IEM use in the EU? Specifically: Germany, Italy, France, Belgium, the Netherlands, Denmark, Poland and Slovenia


    It is dependent on each particular country. I recommend contacting our European offices to assist with frequency coordination while overseas at




    You may contact your local Audio-Technica offices for further assistance.


    Can I use an app on my cell phone to mix?


    You may control any mixing device from your phone that allows for such which is plugged into the M2 Transmitter input. There is not app to control the M2 IEM system.


    We need replacement antennas for the transmitter packs but I cannot find where to buy them. They are the screw on type to the body pack itself. Any help would be appreciated!


    Please contact our Parts Department at (330) 686-2600 ext 5002 or at for assistance with this.


    How many M2R receivers can run from one single M2T Transmitter?


    Thank you for your inquiry. As many as you want.




    Thank you for your inquiry. You may contact our Parts Department at or call (330) 686-2600 ext 5002. to inquire about a replacement if you are located in the US.


    I have a question, Audio-Technica M2R UHF Stereo Receiver. Model#614-647MHz. The other receivers I bought are 575-608MHz. They all work on c3. Is the 614 compatible with the 575?


    Thank you for your inquiry. No, they are not. The system is available in two different frequency bands.


    If I buy the M2s, can I connect other receivers from other brands? From the same brands? Or is the system supposed to just work with the receiver it includes? Thanks in advance.


    No, you will need to use matching transmitters and receivers from the same manufacturer and series as Pilot Tones may differ.


    Hi, my band currently has 5 m2rL in-ear wireless systems. In our last gig, mine stopped working. We did the obvious stuff - replaced batteries, checked to see that the transmitter was on, turned both off then on, checked our earbuds etc. Then we noticed that the RF light was not on. Is my next step to send it away for repair? Any idea what the range of repair costs could be? Thanks! Barry


    Thank you for your inquiry. Did you have 5 different transmitters and 5 different receivers? Make sure the SQ Level is turned all the way down, to counter clockwise. Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at for assistance with this.

    I was givin 2 AudioTechnica M2T's. They are both M band. I have found 2 used M2R's online but they are L band. Will they work with my M2T units??? Also I saw on specs page "Band M: 614.000 to 647.000 MHz, 100 frequencies DISCONTINUED IN NORTH AMERICA" Does that mean my M2T's won't work with any M2R's in the U.S.???

    Bill J

    Thanks for your inquiry. Unfortunately the L Band receivers will not work with the M Band transmitters. All of our 600Mhz Band wireless systems are discontinued due to the FCC auctioned off the 600Mhz. So it will be illegal to use 600Mhz frquency products in the near future. Check this website out for more information: