Overview: The Etymotic Research hf3 in-ear headphones offer excellent sound
quality and noise isolation. The headphones come with a variety of ear tips for
superb noise isolation, a clothing clip, wax filters, and a zippered storage
Balanced-Armature Drivers: The hf3 headset + earphones use high-performance,
precision matched ACCU-Driver balanced-armature drivers to achieve a high 105 dB
SPL sensitivity, and an 85% response accuracy from 20 Hz to 15 kHz.
Noise Isolation: The hf3s have a closed-back design and noise-isolating ear
tips to achieve a 98% reduction (35dB to 42dB) in ambient noise. The 3-flange
silicone ear tips work with most sizes of ear canals to ensure a comfortable fit
and a proper seal. The foam ear tips are heat-sensitive and will expand inside
your ear canals to perfectly form to the contours of your ear to block out
ambient noise. The earphones also come with an option for custom-fit earpieces.
In-line Remote/Mic: The hf3 headphones have an attached 48" cable with an
in-line 3-button remote control and microphone. The outer buttons control volume
up and down, while the inner button controls music playback and phone calls).
The remote control is fully compatible with Apple devices (iPhone, iPad, iPod
touch), and partially compatible (playback/phone control but no volume control)
with Android devices. The in-line remote includes a close-proximity, high
sensitivity (-40 dB V/Pa) microphone for superior call quality. (The Etymotic hf5 is identical to the hf3, but lacks the microphone and in-line remote.)
ACCU-Filter: The Etymotic earphones are equipped with special ACCU-Filter wax
filter to smooth the frequency response and prevent earwax from entering the
earphones. The filters are placed at the end of the ear bud nozzle, and should
be changed when they become clogged with ear wax. A filter removal tool is
included in the package.
- Frequency Response: 20Hz - 15kHz
- Accuracy Score: 85%
- Impedance: 16 Ω (at 1 kHz)
- Sensitivity: 105 dB SPL (at 1 kHz / 0.1v)
- Maximum Output: 120 dB
- Noise Isolation: 35-42 dB
- Ear Bud Dimensions: Diameter 0.277" Depth 1.165"
- Weight: 0.4 ounces
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