Etymotic Research er-22 Broschüre

The earphone provides the highest noise isolation of any mobile phone headset.*  Noise reduction is 37 dB, averaged

over the octave frequencies from 125 to 8000 Hz, allowing only the audio from the caller to enter the ear. As an

earplug, it has a calculated noise reduction rating (NRR) of 24 dB. The microphone provides 4 to 11 dB greater 

noise rejection than other microphones at the same location, and up to 25 dB more noise rejection than booms 

that are not close to the mouth.

Etymotic Research combined its noise-isolating earphone 

and noise-rejecting directional microphone technologies 

to produce the hands-free ETY-COM headset for use with

mobile phones. Clear, two-way conversation is possible in

very high levels of background noise. This isolation allows

you to hear clearly and speak softly for greater privacy.

The ETY-COM headset is the most technically advanced

headset of its kind.

In-the-ear earphone 
optimizes sound 
quality and 
noise isolation

Compatible with phones 
requiring a universal 
3-conductor, 2.5 mm plug

The sound quality of the ETY-COM is noticeably better than that of ordinary

headsets because the ETY-COM headset uses an Etymotic earphone designed

for accurate music reproduction.

The ETY-COM’s earphone frequency response extends beyond the typical 

low-fidelity telephone bandwidth to produce exceptional sound. The ETY-COM

headset was designed to smooth the peaks in the frequency response that

make sound harsh and uncomfortable at loud volume levels. The result is clear

communication without distortion.

A close-talking 

directional microphone 

positioned for maximum clarity