2 in stock (can be backordered)
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
Professional quality and reliability
First earphones to completely seal the ear
What’s In the Box?
|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|