Headphones
| Headphone frequency |
20 - 16000 Hz |
| Wearing style |
In-ear |
| Ear coupling |
Intraaural |
| Impedance |
100 Ω |
| Headphone sensitivity |
90 dB |
Packaging data
| Airplane plug |
Y |
| Plug adapter |
Y |
| Extra earbuds |
Y |
Additionally
| Wireless technologies |
Wired |
20 - 16000Hz, 100 Ohms, 3.5mm jack, 1.5m, Black
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.
<b>World leader in sound reproduction</b>
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
<b>Timeless style and fit</b>
Professional quality and reliability
An assortment of noise-isolating ACCU•Fit™ eartip options to ensure proper seal and comfort
CUSTOM•FIT option available
<b>Highest noise isolation</b>
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
<b>Best durability and warranty</b>
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
