About Er-4 Earphones - Etymotic Research Isolator ER-6 User Manual

ABOUT ET YMOTIC RESEARCH

ABOUT ER-4 EARPHONES

Noise reduction with ER-4 MicroPro earphones occurs naturally from the
inserts. Other earphones with active noise-cancelling add circuit noise
and require bulky batteries.
In-the-ear, high fidelity transducers combine flat frequency response
with isolation from external noise.
The white 3-flange eartips provide 35 dB average external noise
isolation. Foam eartips provide 41 dB average external noise isolation.
Lowering surrounding noise allows the listener to hear the full dynamic
range of recordings at lower reproduction levels.
ER-4 MicroPro earphones are ideal for a variety of consumer uses
such as personal CD and DVD players, MP3 players, and computers.
Professional uses include mixing and stage monitoring in the studio
and during live performance.
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