Headphone 耳筒 / ETYMOTIC / ER4XR
ER4XR

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 earphon

Introduction

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.

Specification

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