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Etymotic Research ER4P MicroPro Noise-Isolating In-Ear Earphones (Discontinued by Manufacturer)
- 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 and 1/4 inch stereo adapter
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From the manufacturer
Etymotic Research, Inc. is an engineering-driven research, development and manufacturing company. The name 'Etymotic' (pronounced 'et-im-oh-tik') means 'true to the ear'. Innovation, education and hearing conservation are central to Etymotic's mission.
Etymotic ER4 microPro Series Earphones
In-Ear Invented Here.
Etymotic invented noise-isolating, in-ear earphones. Etymotic's original design, developed for auditory research and hearing testing, used balanced-armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones.
- Braided cable for reduced microphonic effect.
- User replaceable filters protect drivers from ear wax and other debris.
- 3 models designed to meet your specific listening needs.
Etymotic designs products to measure, protect and improve hearing, and enhance the listening experience of music lovers everywhere. Audio engineers, musicians and audiologists at Etymotic have generated over 100 patents issued and pending.
Why In-Ear Monitors?
True high-fidelity requires reproduced sound to be as close as possible to the sound of a live performance. Etymotic's earphones have the highest response accuracy of all in-ear earphones.
In The Box
- ER4 microPro earphones.
- Assortment of eartips.
- Filter removal tool and replacement filters.
- Shirt Clip.
- Carrying Case.
- Exclusive channel-matching compliance graph signed by the Etymotic engineer who precision matched and custom tuned the balanced-armature drivers.
Which ER4 microPro is right for you?
ER4B earphones are for the binaural recording enthusiast. Ideal for use with material that has not been equalized for loudspeaker playback.
ER4S earphones are designed to compensate for the high frequency emphasis in recordings. Performing musicians often use them because the response matches that of most monitor loudspeakers. Popular with musicians, recording engineers and audiophiles, ER4S can be used with a headphone amplifier if desired.
ER4P-T Portable Travel
ER4P-T is intended for sound engineers and audiophiles in constant motion and can be used with portable devices without an additional amplifier. Compared to the ER4S, the ER4P-T has 10dB greater output at high frequencies and 13dB greater output at low frequencies.
The ER-4P MicroPro noise-blocking earphones from Etymotic Research offer realistic sound reproduction and noise isolation that far surpasses that of active noise-canceling earphones.
From the Manufacturer
From the Manufacturer The ER-4P MicroPro noise-blocking earphones from Etymotic Research offer realistic sound reproduction and noise isolation that far surpasses that of active noise-canceling earphones. The ER-4P earphones--which require no batteries--can be plugged into any audio source. They can be used with portable CD, MP3, DVD, and other players without an additional amplifier.
The ER-4P earphones were designed to match the response of the ear, creating nearly perfect sound reproduction. They reduce external sound naturally by sealing your ear canals, without the added weight, bulk, or external power supply required for active noise-canceling. Their external noise exclusion (up to 33 dB using the supplied 3-flange eartips and 41 dB with foam eartips) lets you hear the full dynamic range of recordings without your having to play them at unnaturally high and unsafe levels.
The ER-4P comes with everything needed for audiophiles, performing musicians and recording engineers .
See how the ER-4P measures up in response accuracy.
ER-4P earphones can be used with portable CD, MP3, DVD and other players without requiring an additional amplifier. As compared to the ER-4S, the ER-4P has 10 dB greater output at high frequencies and 13 dB greater output at low frequencies. The higher sensitivity and enhanced bass of the ER-4P have made it the most popular earphone for most uses.
Noise reduction with ER-4 MicroPro earphones occurs naturally from the inserts. Other earphones with active noise-cancelling add circuit noise and require bulky batteries.
In-the-ear, high fidelity transducers combine flat frequency response with isolation from external noise.
The white 3-flange eartips provide 35 dB average external noise isolation. Foam eartips provide 41 dB average external noise isolation. Lowering surrounding noise allows the listener to hear the full dynamic range of recordings at lower reproduction levels.
ER-4 MicroPro earphones are ideal for a variety of consumer uses such as personal CD and DVD players, MP3 players, and computers. Professional uses include mixing and stage monitoring in the studio and during live performance.
What's in the Box
ER-4P MicroPro earphones, a 5-foot cord with 3.5 mm stereo phone plug, a .25-inch stereo phone adapter plug, six 3-flange eartips, 10 foam eartips, a filter-changing tool, 4 replacement filters, a shirt clip, a zippered pouch, a storage box, a user's manual, and warranty information.
Top Customer Reviews
--Jack/connection started failing after 3 months.
--I wish the cable was more floppy. Most oxygen free cable is pretty floppy. I don't know if they are using a stiff coating or stiff cable, but it's annoyingly stiff.
I wish I could rate sound quality and reliability separately. These are excellent sounding earphones worthy of 5 stars. No question about it. And, these are great on airplanes as there is good insulation from outside noise allowing you to hear a lot of detail in your music (assuming you are listening to loss-less files and especially if you have a DA Converter mod on your iPod).
I am the kind of guy who listens to music at home through high end DA converters and reference monitors all wired via Canare cable and Neutrik jacks. When I record, I use the hyper-accurate DACS Clarity pre-amp. I am nutty about clarity and detail and I am nutty about paying more for the best - and that includes gear that is performs well but also is well built.
That's where my issue is on the pair I have. I take care of things I own and am well aware of how to treat cables and stress areas where cables meet jacks. I bought these for the airplane as I was commuting to another city. So that's two uses per week (2 flights per week). When they were not in use, they were put in a plastic box to prevent them from getting damaged. So it was annoying to me that I got intermittent failure of one of the stereo sides and have to move the cable by the jack area to get a stereo signal. They did this after about 3 months but I put up with it, not having time to deal with it. After I stopped commuting another 5 months later at the end of 2012 and never used them again. I recently went to use them and thought - I'll ask the company what they charge to fix them. This is the fee schedule.
ER4 Service Fees are:
Includes testing, cleaning, new eartips, new filters and transducer replacement (one or both): $85
Cable replacement only: $50
Transducer and cable replacement: $130
I understand they are out of the 2 year warranty now, and I totally understand that a company cannot service products for free. I don't fault them but I find it REALLY ANNOYING since I am such a careful person and since this kind of failure is the kind of thing you get from Radio Shack patch cables. I also do wish the cable would just lie flat like a good audio cable does. I don't know if that has something to do with their twisting for RF/noise rejection or not but it's a stiff cable. It does not feel twisted under there.
I would say I'm a mostly typical user. I'm not trying to run with the things or sleep with them in my ears or anything silly like that; I've only ever used them while sitting down at work/home or during some light chores around the house (cleaning, dishes, etc). The first year or so of my nearly three years of ownership was absolutely wonderful. But then the cables began to lose connectivity at the strain-reliefs. At first it was the at the plug end. Then on the plug side of the center barrel. And this week I find one of the right earpiece wires is about to break. For all of these cases the wire breakage is either within a strain-relief itself or at the point where the cable enters one.
I don't like engaging in warranty replacements and prefer to do repairs on my own. In all cases I was able to fix the damaged connection and reinforce the breakage site, but my patience has run out as of this latest incident. I almost impulse-bought an ER-4PT, but fortunately I managed to back away from the submit button. I will attempt a new repair and probably just proactively reinforce the left-side earpiece while I'm at it.
As for the cause of all this trouble: perhaps some of the non-sitting usage contributed, but I think the main stress occurred after the end of each session when I would fold and wrap them for commuting to and from wherever. It is difficult to accurately explain how I was doing this in a text review. The plug end was folded back and forth over the length of the center barrel and the earpieces were wrapped around this bundle. I did make sure to not put a tight bend on the strain-reliefs but obviously I was not careful enough. Maybe a circular wrap of the whole set will work better...
Anyway, I don't think it fair to rate less than 5 due to my bungling. Don't do what I did and you'll have a nice long-lasting relationship, I'll bet.