etymotic er4

The ER-4 MicroPro earphones are the next best thing to live music, with noise isolation far surpassing that of active noise-canceling earphones.

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 ...

- Unparalleled sound accuracy. - Virtual elimination of external background noise. - Lightweight and portable (great for traveling).

This pack of replacement foam eartips fits all models of Etymotic earphones, including the ER4, ER6, ER6i, and ETY8. Their design provides a high level of noise isolation.