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.
ER4SR is Etymotic’s new reference standard hi-fidelity earphone, for those who demand nothing less than the highest fidelity. The next generation of our long revered flagship earphone, the ER4S, the ER4SR delivers increased accuracy with greater sound output, or sensitivity. Like its predecessor, the ER4SR channels are matched within an industry-leading 1dB across frequencies from 100Hz to 10 kHz. The new ER4SR incorporates significant cosmetic and functional improvements, from a sleek, anodized and laser-etched aluminum body to the reinforced, user-replaceable detachable cable. The ER4SR is a must have for discerning engineers, audiophiles, and consumers wanting the most accurate in-ear earphone available.
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
