Over 30 years ago, Etymotic invented noise-isolating, in-ear earphones. Etymotic’s original design, developed for auditory research and hearing testing, used balanced –armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones. ER4 earphones were the first high-fidelity, noise isolating in-ear earphones to use this technology in a consumer earphone, and are recognized as the world leader for response accuracy to which all other earphones are compared. After more than 20 years, these reference-quality earphones are still the choice of serious sound engineers, audiophiles and musicians.
OVERVIEW
Over 30 years ago, Etymotic invented noise-isolating, in-ear earphones. Etymotic’s original design, developed for auditory research and hearing testing, used balanced –armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones. ER4 earphones were the first high-fidelity, noise isolating in-ear earphones to use this technology in a consumer earphone, and are recognized as the world leader for response accuracy to which all other earphones are compared. After more than 20 years, these reference-quality earphones are still the choice of serious sound engineers, audiophiles and musicians.
ER4XR is the earphone for music lovers and hi-fi enthusiasts who want uncompromising accuracy in the midrange and high frequencies, but appreciate a bit of extra presence in the lower end. Like the ER4SR, the ER4XR is built with precision machined, anodized and laser-etched aluminum bodies and features user-replaceable detachable cables. The ER4XR also incorporates the stringent channel-matching standard used in the ER4SR. The ER4XR is ideal for anyone looking for exceptional sound quality with just the right amount of low-end enhancement.
World leader in sound reproduction
• Unsurpassed frequency response accuracy and sound quality — 92%+ response accuracy from 20 Hz – 16 kHz
• The only earphones with balanced-armature, precision-matched, custom-tuned drivers
• Highest output sensitivity in its class
• Timeless style and fit
Professional quality and reliability
• An assortment of noise-isolating eartip options to ensure proper seal and comfort
• CUSTOM•FIT option available
• Highest noise isolation
First earphones to completely seal the ear
• 98% (35 dB – 42 dB) noise isolation —highest of any earphones or headsets on the market today
• Reduction of outside noise reduces the risk of listening at unsafe levels
• Best durability and warranty
FEATURES
What’s In the Box:
• Earphones
• Detachable, 5 ft. cord with 3.5mm gold plated stereo plug
• ¼” stereo phone adaptor
• Assortment of eartips
• Filter removal tool and replacement filters
• Shirt clip
• Zippered storage case
• Performance certificate
SPECIFICATIONS
• Frequency Response 20 Hz – 16 kHz
• Transducers High performance, balanced armature micro-drivers
• Noise Isolation 35-42 dB
• Impedance (@1kHz) 45 Ohms
• Sensitivity (@1 kHz) SPL at 0.1v 98 dB
• Maximum Output (SPL) 122 dB
• Cable 5 ft Detachable
• User Replaceable ACCU-Filters: Yes
• Warranty: 2 Years
• Custom-Fit Option: Yes
