Etymotic Research ER-4PT User manual

E R • 4 P T U s e r M a n u a l

Thank you for your purchaseof ER•4 MicroPro™earphones,
the world’s most accurate earphones.

ACCU•Driver

™

high performance,
balanced armature driversare
percision matchedfor an accuracy
response of 86%or better.

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INTROD U C T I O N

ER•4 MicroProearphones were thefirst noise-isolating high-fidelity in-ear
earphones to useACCU•Driver™high performance,balanced armature drivers.
These high-definition transducers combine flatfrequency response with
passive noise isolation. Noise reduction with ER•4 earphones occurs naturally
when the eartips aresealed in the ear canals.

Included with the earphones is the Channel-matching Compliance Graph
showing frequency responsecurves of each custom-tuned,balanced
armature driver.

™

An assortment of ACCU•Fit
flange eartips reduce sound an averageof 35 dB,which is approximately
98% noise reduction. The foam eartips provide slightly more (42 dB) sound
reduction. Lowering outside sound allows you to hear the full dynamic range
of the recording without havingto play itat unsafe levels.

The ER•4 MicroPro series earphonesproduce the highestsound quality of any
high-definition earphones on the market today. We hopeyou enjoy them.

Etymotic Research

You know your music. Etymotic know your ears.

eartips is provided in this package. The triple-

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ABOUT E T Y M O T IC RESEAR C HSYSTEM I N CLUDES

• ER•4PTearphones

• 5 ft cord with 3.5 mm stereo plug

• 1⁄4" stereo phone adapter plug

• Assortment of ACCU•Fit

• Filterchanging tool and replacement
ACCU•Filter

™

• Shirt clip

• Airline adapter

• Travel pouch

• Storage box

• Channel-matching compliance graph

™

eartips

wax filters

Accessories areavailable at www.etymotic.com.

Storage Box

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