Etymotic ER4S Reference Earphones Stereo Box

Manufacturer: Etymotic Research, Inc
Manufacturer Part Number: ER4S
Manufacturer Website Address: www.etymotic.com
Brand Name: Etymotic
Product Line: MicroPro
Product Series: ER-4
Product Name: MicroPro ER-4S Stereo Earphone
Marketing Information: ER-4S Stereo earphone have the most accurate frequency response for reproducing CD and MP3 recordings. The sensitivity is comparable to home and professional earphones. ER-4S Stereo earphone are ideal for home stereo use and computer use. ER-4S Stereo earphone can be used with a Earphone amplifier when using low power portable devices. ER-4S is the earphone preferred by musicians and audiophiles.
Product Type: Earphone
Technical Information
Connectivity Technology: Wired
Operating Distance: 60"
Sound Mode: Stereo
Impedance: 100 Ohm
Minimum Frequency Response: 20 Hz
Maximum Frequency Response: 16 kHz
Earpiece
Earpiece Technology: Dynamic
Earpiece Design: Earbud