ER•4 MicroPro™ Series
User Manual Downloads
- ACCU•Driver™ Technology
- High performance, balanced-armature drivers are specified for a response accuracy of 86% or better.
In a Class by Itself
Etymotic invented noise-isolating, in-ear earphones. Etymotic's original insert earphone design, developed for auditory research and medical diagnostics, used balanced armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones. The ER•4 MicroPro series earphones were the first earphones commercialized using this technology and are recognized as the world leader in response accuracy, to which all other earphones are compared. After more than 20 years, these reference-quality earphones are still the choice of serious sound engineers, audiophiles and musicians.
ER•4PT, the newest model in the MicroPro series, is intended for sound engineers and audiophiles in constant motion. ER•4PT combines the acoustic characteristics and features of ER•4P earphones, and comes with extra mobile adapters and accessories for traveling professionals. Also included is an industry-exclusive channel-matching compliance graph, signed by the Etymotic engineer who precision matched and custom tuned the balanced-armature drivers.
Backed by decades of research and development for the ear
- World leader in sound reproduction
- Unsurpassed frequency response accuracy and sound quality — 86%+ response accuracy from 20 Hz – 16 kHz
- The only earphones with Accu•Driver™ balanced-armature, precision-matched, custom-tuned drivers
- Highest output sensitivity in its class
- Timeless style and fit
- Professional quality and reliability
- An assortment of noise-isolating ACCU•Fit™ eartip options to ensure proper seal and comfort
- CUSTOM•FIT option available
- Highest noise isolation
- First earphones to completely seal the ear
- 98% (35 dB - 42 dB) noise isolation —highest of any earphones or headsets on the market today
- Reduction of outside noise reduces the risk of listening at unsafe levels
- Best durability and warranty
- 2-year replacement warranty
- Braid-reinforced cable for extremely low microphonic effect
- ACCU•Filter™ user-replaceable filters protect the balanced-amature drivers from ear wax
- Accessories
- Instructions for Use
- Accurate Earphone Reproduction
- Technical Specifications
Note: ER-4 eartips are not interchangeable with ER-6 eartips
Eartips
The earphones fit into the ear canals with either soft plastic flanged eartips or foam eartips. The plastic eartips can be cleaned and reused.Important:
- For best performance and the most solid bass response, the eartips must be inserted deeply in the ear canals.
- If one or both earphones stop working or has reduced volume, change the earphone filter. See About the Filter - Changing Filters for detailed instructions.
Insertion and Removal of Eartips
View Earphone Insertion Video- For best results, moisten the 3-flange eartips before insertion.
- Using your right hand, grasp the eartip with the red plug.
- With your left hand, pull up and back on your right ear to straighten your ear canal.
- Carefully insert the right earphone so that it seals deeply and comfortably in your ear.
- Repeat procedure for the left ear, using the earphone with the blue plug.
- Remove earphones slowly with a twisting motion to gradually break the seal.
Foam Eartips
If a good seal cannot be obtained with the 3-flange eartips, use the black foam eartips supplied with the earphones.- Firmly grip the 3-flange eartip with one hand and the earphone with the other.
- Remove the eartip from the earphone, and replace it with a black foam eartip.
- Compress the foam eartip by rolling it between your fingers.
- With the opposite hand, pull up and back on your ear to straighten your ear canal.
- Carefully insert the earphone into the ear canal, holding it in place until the foam expands to produce a seal.
Proper Earphone Use
When used correctly, the ER•4 MicroPro earphones will provide excellent performance and high quality audio. Because the ER•4s provide exceptional sound reproduction and unrivaled isolation from outside sounds, high playback levels are unnecessary.- Set the volume control of the audio source to minimum.
- Insert the 3.5mm earphone plug into the headphone jack (a 1/4" adapter is also supplied).
- Set the volume control to a comfortable listening level.
- Do not use insert earphones while driving a motorized vehicle, operating machinery, bicycling or jogging, because you may not be alerted to potential danger.
- Do not use the earphones at excessively loud levels.
Care of Earphones
- Do not expose earphones to extreme temperatures.
- Avoid dropping or strong impact.
- Keep earphones away from water and dust.
- Do not pull on the cord to remove it from the jack or the ear.
- Avoid bending the barrel in the center of the cord.
- Clean the 3-flange eartips prior to use by others.
- Replace disposable foam eartips regularly.
Cleaning the 3-flange eartips
- Firmly grip the eartip with one hand and the earphone with the other.
- Carefully remove the eartip from the earphone.
- Use warm water and mild soap to remove dirt and earwax from the eartip. Do not get the earphone wet.
- Rinse and completely dry the eartip before placing it back on the earphone.
- Push the eartip on the stem until it rests on the large edge of the barrel.
About the Filters
Changing Filters
ER•4 MicroPro Earphones have special filters that shape the frequency response and prevent earwax from entering the earphones. These filters, a green acoustic mesh in a small metal barrel, are located at the end of the earphones and are visible when the eartips are removed. A dirty filter will reduce or block the earphone output (a filter may be blocked without appearing to be dirty). If one or both earphones stops working, or if the volume decreases, the filter should be replaced. The frequency with which the filters need to be changed will vary widely among users.Quick check: Remove the filter. If sound returns, the earphone is OK; insert a new filter.
Note: Filters are not reusable.
ACCU•Filter RemovalNote: Use the tool to remove the filter.
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ACCU•Filter ReplacementNote: Do not use the tool to replace the filter.
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Accurate Earphone Reproduction
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. To achieve this, the acoustic properties of the ear must be factored in. The acoustic resonance and horn effects of the ear change a flat audio signal entering the open ear into sound with a (2700 Hz) high-frequency boost, which is the same response heard at the eardrum in a typical ear.
Channel-Matching Compliance Graph supplied with each ER•4PT |
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MicroPro Frequency Response (measured at eardrum) |
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