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Professional In-Ear Monitor Headphones

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

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  • Professional In-ear Monitor Headphones
  • professional in-ear headphones
  • professional monitor headphones
  • professional in-ear monitor headphones

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

  • Overview

    The proprietary dual phase push-pull driver design of the ATH-E40 professional in-ear monitor headphones provides improved fidelity and efficiency. These headphones deliver powerful bass along with balanced mid and high frequencies to convey the full emotion of the music from the stage to the street.

    The ATH-E40 features specially designed housings that provide incredible isolation. The isolation and the comfort are enhanced by the four sizes of included silicone eartips (XS/S/M/L), which allow you to create a custom fit. The headphones also come with a detachable 1.6 m (5.2') cable, with newly developed A2DC (Audio Designed Detachable Coaxial) connectors at the headphones and a 3.5 mm (1/8") stereo mini-plug output, and a carrying case.
  • Features

    • Proprietary dual phase push-pull drivers excel in monitoring applications by providing exceptional accuracy and clarity

    • Flexible memory cable loops over ears for a custom fit and long-wearing comfort

    • Specially designed housings provide maximum isolation, allowing you to focus on the music

    • Detachable 1.6 m (5.2') cable, with newly developed A2DC (Audio Designed Detachable Coaxial) connectors at the headphones, offers exceptional durability and optimized audio performance (also available separately as the EP-C)

    • Includes a carrying case, 6.3 mm (1/4") adapter, and silicone eartips (XS/S/M/L)

  • Specifications

    Frequency Response20 20,000 Hz
    Sensitivity107 dB/mW
    Impedance12 ohms
    Weight10 g (0.3 oz), without cable
    CableDetachable 1.6 m (5.2') with A2DC connectors
    Connector3.5 mm (1/8") gold-plated stereo mini-plug, L-shaped
    Accessories IncludedCarrying case, silicone eartips (XS/S/M/L), 6.3 mm (1/4") adapter

  • Downloads

    E-Series Professional In-ear Monitor Headphones Brochure (pdf 760.96 KB)
  • Reviews

    Love them!


    I am a drummer in a band and wear these at least 3 time a week. I have never had any issues with them at all. Good bass without losing the vocals from the mix. I use the Comply T-500 tips.

    Toronto, Ontario




    Great sound.. perfect natural..

    San Jose


    Good quality


    Sound was excellent, but sound isolation still have to be improve





    These are like the m50x's but just in ear.



    Definitely a great IEM


    I have this E40 with me for the last three months and I totally in love with it. It's my very first IEM and I'm sure glad to bought this product. The amount of bass in this IEM is just on the right spot for my ears (I'm not that much of a bass-head). The high frequency is rather smooth. Maybe some say it's to bulky and stuff, but for me it's not as bulky as they say. But the drawback is the cable feels a bit thin and feels like you might snap it accidentally if you're not careful enough. I personally would prefer just a tiny bit thicker cable. But overall, the body construction of this IEM is great, the sound is lovely, the price? Totally worth it !! If you're thinking to upgrade your IEM from entry level to a better stage, you should try and consider to get one of this.

    Surabaya, Indonesia


    Not what I expected!


    These in-ear headphones were my first from Audio-Technica's lineup. The sound quality on these headphones are superb and can definitely handle bass with quality and clarity. Out of the box these headphones do not provide a passive bass boost but that should not deter any user from purchasing these headphones. They can handle bass without the audio/vocals being distorted. Compared to my previous Sennheiser In-Ear headphones, these are huge, might it be the drivers or the housing of the drivers, nonetheless these headphones are comfortable and I have worn them for hours without discomfort. One gripe I do have however is that the earmolds are not by option nor are they removable which is a nuisance. Every time I take off my headphones I have to fiddle or "reshape" the earmolds which is annoying. I have tried looking for aftermarket solutions since these headphones do come with A2DC (the drivers are detachable from the cables). It would've been a nice addition if they included different types of cables, otherwise the A2DC design is redundant as by the time of writing this review I cannot find any cables.

    New York


    ATH-E40 Professional In-Ear Monitor Headphones

    5.0 6


  • Q & A

    Can I buy one lost monitor separately?


    Thank you for your inquiry. Please contact our Parts Department at 330-686-2600 ext. 5002. They would be happy to help you.


    Do you offer replacement silicone tips for this product and if so, what are the part #'s for such?


    Yes, the model numbers are: EP-ET/S (small) EP-ET/M (medium) EP-ET/L (large)


    How long will be the burn in time? And what should I do during the burn in time? Do you have any procedure for that?


    Plug them in and listen, the sound won't change in any significant manner. If you "must" do break in, 12 hours of pink noise at moderate levels should aid the imagination.


    Thank you for your inquiry. Please contact Audio-Technica Singapore at for further assistance with this.


    Is there a frequency response chart for these headphones.


    Thank you for your inquiry. At this time there is no frequency response chart available.


    I'm needing a new detachable cable can you detect me to where i can purchase a new one and perhaps a longer and more premium cable?


    You can get a replacement cable by contacting our Parts department at


    What is the diameter of the output speaker nozzle?


    Thank you for your inquiry. The post is 6.05 mm and the flange is 5.88.


    What's the nozzle size and how do I fit them properly


    Thank you for your inquiry. Please contact our Audio Solutions Team at 330-686-2600 ext. 5000. They can discuss this with you.


    Can I replace this wire with one that has a microphone??


    The M Series headphones including the ATH-E40 headphones, being designed for professional studio monitoring, will not have consumer headphone features such as an inline microphone available.


    Will the Comply T-500 foam tips work on these? Is the nozzle the same size as the E70?


    Indeed they will! The Comply tips can be purchased through our Parts department by contacting them at


    Why are the specs on these headphones on the US website different from the specs of these headphones on the japanese website?


    Thank you for your inquiry. Please note the specs on our site were not correct. We have updated to match the spec on Japan's site.