The Etymotic Research ER-4P stereo earphones feature an ultra-lightweight design, 35 - 42dB of external noise attenuation and an enhanced output level for both the high and low frequency range. This is a combination that ensures clear, natural listening enjoyment at safe and moderate playback levels.
These earphones are specifically designed to accompany all manner of portable audio listening devices, with no additional amplification required.
Ultra-lightweight audiophile-quality earphones for portable audio listening with transparent, reference-quality sound
Custom removable filters shape frequency response, protect earphones from earwax
Foam and plastic flange eartips provide comfortable fit and maximum sound isolation
Recommended for use with all portable players including Minidisc, CD, DVD and MP3
High sensitivity with enhanced bass and high frequency output, no additional amplifier required
High external noise exclusion ensures monitoring at safe, moderate listening levels
Accurate, real-ear response