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User Guide

ManualsBrandsEtymotic Research ManualsEarbud HeadphonesER2XR Extended Response High Performance In-Ear Earphones (Detachable Dynamic Drivers, Noise Isolating, High Accuracy, Robust Low Frequencies)
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1. Align the key tab with the notch in the body of the earphone and cable connector.
2. Press together until you feel it snap in.
Changing Filters
Etymotic earphones have special filters that smooth the frequency response and prevent earwax
from entering the earphones. A filter is located at the end of the earphone and is visible when the
eartip is removed. If a filter becomes clogged, it should be replaced. A dirty filter will reduce
earphone output. The filter should be changed if loudness decreases or the sound quality
declines.