Etymotic Research ER4XR Balanced Armature In-Ear Earphones With Extended Range

Part of the ER4® reference earphone series developed for auditory research and hearing testing by Etymotic Research—inventors of noise-isolating in-ear earphones—the ER4XR (EXtended Response) use balanced–armature receivers. This technology, offered in a consumer earphone here first, has established them as the gold standard for high-definition, in-ear earphones. The ER4XR models features extended bass response—made for music lovers and hi-fi enthusiasts who want to experience uncompromising precision in the midrange and high frequencies, but also appreciate a bit more added presence in the lower end. Like the ER4SR models (sold separately), the ER4XR is designed and built with precision machined, anodized, laser-etched aluminum bodies, and feature user-replaceable, detachable cables. They also employ the same stringent channel-matching standard used in the ER4SR models. The ER4XR is great for anyone seeking exceptional sound quality along with just the right amount of low-end enhancement. They’re a member of the family of earphones that is recognized as the world leader for signal response accuracy to which all other earphones are compared

Etymotic Research Inc ER4XR Includes:

• ER4XR earphones
• Detachable, 5ft cord with 3.5mm gold-plated stereo plug
• ¼” stereo phone adapter
• Assortment of eartips
• Filter removal tool and replacement filters
• Shirt clip
• Zippered storage case
• Performance certificate

Etymotic Research Inc ER4XR Features:

• 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
• Professional quality and reliability
• Enhanced and extended bass
• Metal bodies with anodized finish
• An assortment of noise-isolating eartip options to ensure proper seal and comfort
• CUSTOM•FIT option available (see below)
• 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
• 2-year replacement warranty
• Detachable cables allow for easy replacement and customization
• User-replaceable filters protect the balanced-armature drivers from earwax

Etymotic Research Inc ER4XR Specifications:

• Frequency Response: 20 Hz – 16 kHz
• Transducers: High performance, balanced armature micro-drivers
• Noise Isolation: 35 – 42 dB
• Impedance (@1 kHz): 45 Ohms
• Sensitivity (@1 kHz) SPL at 0.1v: 98 dB
• Maximum Output (SPL): 122 dB
• Cable: 5ft, detachable
• User Replaceable ACCU-Filters: Yes
• Warranty: 2 Years
• CUSTOM•FIT Option: Available (see note below)

Note:

In an industry exclusive, every pair of ER•4 earphones includes a channel-matching compliance graph signed by the Etymotic engineer who precision-matched and custom-tuned the balanced-armature drivers.

Etymotic offers a cost-effective CUSTOM•FIT solution to make your favorite earphones the best they can be with superb comfort, secure fit, and consistent noise isolation. It requires a brief registration process and a visit with an authorized audiologist to have ear impressions made. Please contact your Sales Pro for more information on this option.

Due to the personal nature of its usage, this product is non-returnable.