Etymotic Research ER4SR Noise Isolating Studio Reference In Ear Earphones
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Description
Etymotic Research ER4SR Noise Isolating Studio Reference In Ear Earphones
Etymotic invented noise-isolating, in-ear earphones. The ER4 MicroPro series earphones were the first earphones commercialized using balanced armature technology and are recognized as the world leader in 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.
Technical Specifications
Frequency Response
20 Hz - 16 kHz
Transducers
High performance, balanced armature micro-drivers
Noise Isolation
35-42 dB
Impedance (@1kHz)
4XR (45 Ohms) 4SR (45 Ohms)
Sensitivity (@1 kHz) SPL at 0.1v
4XR (98 dB) 4SR (98 dB)
Maximum Output (SPL)
122 dB
Cable
5 ft Detachable
User Replaceable ACCU-Filters
Yes
Warranty
2 Years
Custom-Fit Option
Yes
Installation / Use Cases
- Use the reference in-ear monitors for critical listening, studio monitoring, mixing evaluation, and detailed music playback where accurate reproduction is important.
- Use the passive noise isolation in environments where reducing outside sound helps engineers, musicians, or listeners focus on the monitored audio.
- Select from the included silicone and foam eartips to achieve an appropriate fit and level of passive isolation.
- Replace the detachable cable or ACCU-Filters when service is required without replacing the complete in-ear monitors.
Frequently Asked Questions
What type of drivers do the Etymotic ER4SR use?
The ER4SR uses a single high-performance balanced-armature driver in each earpiece.
How much passive noise isolation does the ER4SR provide?
Etymotic specifies approximately 35 dB isolation with silicone eartips and up to 42 dB with foam eartips.
What is the frequency response of the ER4SR?
The specified frequency response is 20 Hz to 16 kHz.
What is the impedance of the Etymotic ER4SR?
The specified impedance is 45 ohms at 1 kHz.
How closely matched are the left and right ER4SR channels?
Etymotic specifies left and right channel matching within 1 dB from 100 Hz to 10 kHz.
Can the cable and filters on the ER4SR be replaced?
Yes. The cable is detachable and user replaceable, and the ACCU-Filters can also be replaced.
