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  • Etymotic Research ER-4PT MicroPro Noise-Isolating In-Ear Earphones (Black)
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Etymotic Research ER-4PT MicroPro Noise-Isolating In-Ear Earphones (Black)

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Price: $299.00 & FREE Shipping. Details
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  • Highest noise-isolating earphones on the market
  • Reduction of outside noise reduces the risk of listening at unsafe levels
  • Designed for audiophiles, musicians and sound engineers
  • Assortment of ACCU-Fit eartips included to ensure proper seal and comfort, plus airline adapter and 1/4 inch stereo adapter
32 new from $259.11 1 used from $195.00

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Frequently Bought Together

Etymotic Research ER-4PT MicroPro Noise-Isolating In-Ear Earphones (Black) + Etymotic Research ER20 ETY-Plugs Hearing Protection Earplugs, Standard Fit, Clear Stem with Blue Tip (Light Blue)
Price for both: $313.50

These items are shipped from and sold by different sellers.

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Special Offers and Product Promotions

  • Amazon Free 30-Day Tech Support: This item is eligible for free tech support for 30 days from the date of delivery. Over the phone, our trained technicians can help you set up, configure, connect, and troubleshoot so you can start enjoying your new purchase. Owners of qualifying products can reach Tech Support by calling 1-800-362-5703. Learn more

Technical Details

  • Noise-Cancelling-Feature
  • Noise-Isolating-Feature

Product Details

  • Product Dimensions: 6.6 x 2.1 x 5.6 inches ; 10.6 ounces
  • Shipping Weight: 12.2 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B004CXBJ6A
  • Item model number: ER-4PT
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (80 customer reviews)
  • Date first available at Amazon.com: November 18, 2010

Product Description

From the Manufacturer

ER-4 MicroPro series earphones were the first noise-isolating, high-fidelity in-ear earphones. After 20 years, these reference-quality earphones continue to be the choice of sound engineers, audiophiles, and musicians--and now, with the ER-4PT, you can take this audiophile experience with you anywhere.

The Etymotic ER-4PT Earphones
Designed around the acoustic properties of the human ear

Etymotic's ER-4PT earphones are ideal for long-distance travelers who want amazing sound quality from their MicroPro earphones. Each pair of ER-4PT earphones comes with an assortment of mobile adapters that includes one for airline audio systems. Featuring precision-matched and custom-tuned balanced-armature drivers, the ER-4PT delivers the most accurate sound reproduction possible in the earphone market.

The Best Noise Isolation Available in an Earphone

Based on Etymotic's ACCU-Technology™ platform, ER-4PT earphones have unsurpassed frequency response accuracy. In addition to a braided cable to reduce annoying microphonic effects, the ER-4PTs have the highest noise isolation of any earphones in any category: 35-42dB, or 98% ambient noise reduction. This reduction of outside noise diminishes the risk of listening at unsafe levels, leaving you to listen comfortably in a world of pure music.

Drivers Hand Selected and Matched for Accuracy

For Earphones to have 100% accuracy, a recording of a live performance must produce exactly the same sound at the eardrum as the original performance. Achieving this requires designing an earphone around the shape and acoustic properties of the actual human ear, such as the ear's natural resonance and horn effects.

The Etymotic ER-4PT Earphones
Included adapters offer a true audiophile experience at-home or on-the-go

Each driver in the ER-4PT is identified by serial number and each earphone is documented by an individual frequency response curve. Each pair or ER-4PT earphones is accompanied by a signed channel-matching compliance graph to confirm that the earphones produce the same high-frequency boost that is characteristic of sound heard at the eardrum in the typical ear, ensuring that you receive the most accurate response possible from an in-ear earphone.

Stereo and Airline Adapters Included

ER-4PT earphones and the included adapters are designed to deliver a true audiophile experience for all home and professional audio equipment, portable players, laptops and netbooks, whether at home or on the go. A 1/4" adapter provides flexibility for use with traditional home stereo or recording equipment using a 1/4" headphone jack. The ER-4PT also comes with an included airline adapter for plugging into audio sources on airplanes. Enjoy music or the in-flight movie with the same rich sound and superior noise isolation you enjoy at home.

CUSTOM-FIT Option Available

For the ultimate in personal comfort, a CUSTOM-FIT upgrade option is available. This upgrade option provides personalized molds that are a perfect match to your left and right ears, offering all-day wearing comfort and high noise isolation.

What's in the Box

ER-4PT earphones, 1/4" stereo adapter, airline adapter, 6 pairs of ACCU-Fit eartips, shirt clip, replaceable wax filters, filter removal tool, channel-matching compliance graph, travel pouch, and storage case.

Technical Specifications

  • Frequency Response: 50Hz - 10kHz (2dB), 20Hz - 16kHz (4dB)
  • Transducers: ACCU-Driver balanced armature
  • Noise Isolation: 35-42dB
  • Impedance(@1kHz): 27 Ohms nominal
  • Sensitivity(@1kHz): 108dB SPL (0.2V input)
  • Maximum Output: 122dB
  • Cable Length: 5 ft

Product Description

Portable Listening Earphones, CordedSize Universal, Shape Varies per EartipCord Color BlackPackaging Box

Customer Questions & Answers

Customer Reviews

The treble and mid range were crystal clear.
I would highly recommend these earphones, and would suggest looking at getting custom earmolds.
The noise isolation in these is very surprising.
Gordon Law

Most Helpful Customer Reviews

92 of 96 people found the following review helpful By R. Ding on September 14, 2011
Verified Purchase
First, a little background: I've just came from SE535, CK10, GR07, EX600, IE7, Turbine Pro Copper, and Triple Fi10. These are a few of the IEMs I bought this year, excluding past stuff, and I'll leave the less worthy-of-mentioning IEMs that I've auditioned out.

Most of these have either a higher price tag or is technically superior than the ER4-PT. (dual/triple-BA drivers)

When I took a trip to China earlier this year I had the chance to visit a Jaben store, and audition quite a few higher-end IEMs, including the JH-16 Custom (close to one thousand dollars). Amongst them was the ER4P, which was the one pair of IEMs that impressed me. After the trip I just could not stop thinking about them, and when amazon's price dropped to $192, I pulled the trigger.

I am happy to report that after getting the ER4-PTs, I've been slowly selling off my IEM collection. They are all gone now. I have no interest in my other IEMs any more and barely touched them after my ER4-PTs arrived.
The ER4-PT (Or any of the ER4 series) is a must have in anyone's collection. It has unmatched clarity and accuracy in all universal IEMs, and most custom IEMs.

If you are just starting out with IEMs, you will probably not appreciate what the ER4s have to offer. All the time I hear stories of newbies acquiring ER4s early on their journey, left unimpressed, but then a dozen other IEMs later, they suddenly regret letting them go. But anyone who's had his worthy share of high-end IEMs would be surprised at how pleasing a $200 single BA IEM can sound, even in comparison to SE535 which is double the price.

Let me get the cons out of the way:

- These things have horrible microphonic.
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30 of 32 people found the following review helpful By Ed TOP 100 REVIEWER on May 5, 2011
It took me a while to figure out how to pronounce Etymotic (eh-duh-moe-tick) correctly but not as long to realize just how amazing their earphones are. The pioneers of in-ear monitors (IEM), Etymotic has methodically been adding new products to compliment their award-winning, gold-standard, ER-4 earphones. The ER-4PT is Etymotic's latest ER-4 model, joining the ER-4P, ER-4S, and ER-4B.

- Incredibly accurate sound
- Detailed mids and highs
- Tight bass
- Great noise isolation
- Ideal for portable use
- Partially braided cable inhibits microphonics
- Oodles of accessories included

- Thick plug may not fit on smartphones with cases

Did you know that it's hard to type while shaking your hips and moving your head from side to side, sitting in an office chair? That's the challenge I'm facing right now trying to write this review. I spent about a month listening to the ER-4PT off and on and spent the past two evenings listening to them very critically. Here are my observations:

They are by far the best sounding headphones I have ever heard. The treble and mid range were crystal clear. I could distinguish vocals and instruments very clearly and they all sounded crisp. Bass response was good and tight, though not thumpy like Monster Cable earphones. Every type of music I threw at the ER-4PT sounded fantastic. Aerosmith, Tom Petty, Lily Allen, Liz Phair, Eminem, Olivia-Newton John, Pet Shop Boys, Katy Perry, Black Eyed Peas, Lady Gaga, AC/DC, Smashing Pumpkins, and Metallica all sounded great.
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21 of 22 people found the following review helpful By Amazon Customer on April 13, 2011
Excellent sound quality. Extremely comfortable fit, especially with the black foam tips. If the price doesn't scare you away, these are VERY nice headphones. My only negative comment turned into a positive in the end: they are quite small and slightly fragile. I wear these headphones at least five hours a day at the office. Once, when I hadn't changed my foam tips soon enough (the tips became hardened), I managed to break the tube that runs into the foam tip when changing tips. In hindsight, I probably should have been a little more gentle and not twisted the tip quite as hard as I did. Fortunately, my headphones were still under warranty (which I believe is two years?). I called Etymotic and reached a customer service person with no problem. The CSR was American, polite and knowledgeable. How great is that these days? She had a replacement headset shipped to me which arrived in two days after my call. Fantastic customer service. I highly recommend the product and company.
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14 of 14 people found the following review helpful By Ali B on November 20, 2011
Verified Purchase
First off, I have a collection of headphones that would make most audiophiles blush. I can say without a doubt that these are the best noise isolating headphones I've ever heard/owned. I'm currently in Afghanistan and noise is a constant issue over here (i.e. generators, engines, rocket attacks). These environmental factors render most of my headphones useless, because I have to turn up the volume immensely to compete with ambient noise. That is a battle with no winners, because if I do drown out the world around me the volume is so loud that hearing loss is certain. These provide me with audiophile quality sound and the ability to listen to my music at a reasonable volume.
I wouldn't recommend these headphones for everyone though. They're very flat sounding (which is what there intended to be), but I've noticed that most people don't like flat sounding headphones. If you're looking for someone with a lot of low end, again look elsewhere (monster's ear buds aren't a bad choice). If you're in the market for some very balanced, no BS, noise isolating earbuds made with audionerds in mind than this is your best bet!
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