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Isolation 400

Tx-400 & T-400

Product Description

Hear music the way it was meant to be heard.
A simple audio hack that gives you the isolation you want with the comfort you need.

Maximum Noise Isolation

Seals ear canal from environmental distractions. Enjoy music without raising the volume to compensate for external noise.

Superior Audio Experience

Precise, optimal seal channels sound directly into the ear canal to transform your listening experience.

Secure Fit

Heat activated memory foam expands to unique ear canal shape, creating a custom, secure fit for amazing in-ear retention.


Acoustically transparent filter to prevent wax and debris from entering the sound port. Keeps your earphone sound quality how you like it.





Colors: Platinum, Black, Red, Blue
Small / Medium / Large: 10.67 mm ± 0.65 mm (0.420" ± 0.025")
Diameter at proximal end (end attaching to device):
Small: 10.67 mm ± 0.50 mm (0.420" ± 0.020")
Medium: 12.45 mm ± 0.50 mm (0.490" ± 0.020")
Large: 13.97 mm ± 0.50 mm (0.550" ± 0.020")
Materials: Polyurethane foam, thermoplastic elastomer (all RoHS compliant)
Inside Diameter of Core: Depends on earphone design. Several stock sizes available.

Product Reviews

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Showing reviews 1-10 of 65 | Next

  1. quickly deteriorates

    Posted by Josh on 2nd May 2016

    just a week or two in the gym causes the tips to quickly tear and fall apart. they fit really tight on the headphone itself, and its quite a nuisance just to install them.

  2. VERY hard to put on

    Posted by Unknown on 18th Apr 2016

    Only downside of these is they are very hard to put on, you have to take your time or they will rip apart . the tube should not be as hard as it is, maybe make it a little more soft would make a world a difference.

    Aside from that frustrating fact they are great

  3. Better than I had hoped for!

    Posted by Unknown on 27th Mar 2016

    I ordered these Isolation 400 foams as a last-ditch attempt to find a way to use in-ear style ear buds that didn't fall out all the time and that had great sound. These items hit the mark perfectly! Very highly recommended, particularly if you have oily skin that means most ear buds simply break the seal and lose all bass response, or even worse, just fall out of your ears.

  4. Used for my V Sonic gr07

    Posted by Stéphane Bordage on 28th Feb 2016

    Works fine. Good isolation. Treble are not deemed. Bass are good. Fit to in ear could be better but it does work.

  5. Good Product

    Posted by Hn on 15th Feb 2016

    Received today from Amazon really comfortable and amazing

  6. Astounding isolation and sound depth with a real "no-pressure" fit!

    Posted by Steve H on 3rd Feb 2016

    An "airtight" fit is essential for earbuds to deliver their designed sound quality.
    I have spent way too much time with standard tips constantly adjusting them to 1) establish this fit without 2) feeling like I have this giant potato in my ear.
    Bought the Comply TX400's and - problem gone. Totally gone. Slip them in gently and within a few seconds the seal is established - no pressure feeling!! What a GREAT product!

  7. Expensive near miss

    Posted by John on 4th Dec 2015

    First I tried medium, too small. Then I tried large which barely works but still too small. I don't see an offering of a size to fit my ear canal but then, I've already spent way too much money on guesswork to spend any more with these guys. I'm 40 bucks down with no usable product and I've given up. Once you open the package, you can't return them.

  8. Used to be the best...

    Posted by Unknown on 17th Nov 2015

    I've used these for years and loved them. They used to be better than any other earbud tip on the market.

    But having said that, I feel that the quality of these tips have gone downhill in the past year. The last two sets I ordered have fallen apart way too quickly. It's a shame, may not continue to purchase this item anymore.

  9. Good IE Tips

    Posted by Les on 15th Nov 2015

    +Easy to install
    +Comes with 3 sizes
    +Awesome noise isolation
    +Because they're foam, they're easy to squeeze and insert

    -Could just be me, but the tips can become itchy over long listening sessions.

  10. Probably not worth it

    Posted by Aaa on 7th Nov 2015

    Doesn't isolate so much as expected, normal silicones are fine. Collects ear dirt easier than silicone.

Showing reviews 1-10 of 65 | Next

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