Price updated 29 Apr 2026, 16:00
Etymotic ER4-XR-BT Reference Earphones
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£399.99
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Product Description
- Reference-grade sound quality with DAC and headphone amplifier Compared to conventional in-ear headphones the Etymotic ER4-XR-BT deliver reference-grade sound utilising high-end components to deliver a superior listening experience. Ideal for music lovers and audiophiles the ER4-XR-BTs feature a single balanced Armature driver which eliminates the need for a crossover which results in improve sonic accuracy compared to standard earphones. The high-end driver delivers impressive SPL sensitivity (122dB) with a transparent frequency response that provides powerful bass and nuanced midrange and high frequencies for a full-bodied sound. Accompanying the high-end driver design is a the AK4331ECB reference-grade headphone amplifier designed to optimise your listening experience and capture every nuance of your music. With four types of 32-bit digital filters the ER4-XR-BTs deliver crystal-clear sound quality optimised for wireless use. Bluetooth 5.0 &ndash
- Etymotion cable with controls Building on the design of its wired sibling the ER4-XR-BT earphones come complete Eytmotics Etymotion Bluetooth cable. Featuring the latest Qualcomm chip the Etymotion cable provides support for a wide range of codecs and audio formats including AptX AptX HD and AptX LL delivering lossless 24-bit/48kHz audio fidelity. Optimise for clarity and low-power use
- the Etymotion Bluetooth cable delivers superior acoustic performance equipped with MMCX connectors so it can also be used with other earphones including the rest of the ER-series. Eight-hour battery life and Awareness Mode Never miss a beat thanks to the high-capacity rechargeable battery p[providing up to eight hours of battery life from a full charge. One of the most unique features of the ER4-XR-BT is Awareness Mode. Activating Awareness Mode allows the earphones to pick up ambient sound so you can hear your surroundings. Promoting spatial awareness this mode is perfect for when you need to converse with someone without having to remove the earbuds. The earphones also come complete with a zippered storage case to protect your earphones as well a variety of differently-sized eartips for maximum comfort. Whats Included Etymotic ER4-XR-BT earphones Detachable 5 ft. cable with 3.5mm gold plated stereo plug Assortment of eartips: 4 Dual Flange Silicone Pairs: S M L XL. 2 Triple Flange Pairs: Standard and Large. and 2 Foam Pairs: Standard Filter removal tool and replacement filters to protect the BA drivers from ear wax Shirt clip Zippered storage case Channel-Matching Compliance certificate Features Reference-grade sound quality with flat frequency response Ideal for music lovers and audiophiles on the move Precision machined anodised laser-etched aluminium body Bluetooth 5.0 Etymotion cable with three-button controls for changing volume skipping tracks and more Lossless wireless audio with 24-bit/48kHz audio resolution Awareness Mode allows for ambient noise so you can converse/hear your surroundings without removing your earbuds Precision-matched and custom-tuned left/right channels Built-in DAC/headphone AKM AK4331 amplifier Up to eight hours battery life from a full charge Complete with 3.5mm wired cable for non-wireless devices MMCX connection allows you to use the cable with other Bluetooth earphones Specifications Frequency Response: 20 Hz &ndash
- 16 kHz Transducers: Single high-performance balanced armature per channel. Noise Isolation: 35dB using silicone ear tips 42dB using foam ear tips Impedance: 45 Ohms @ 1kHz Sensitivity: 98 dB @ 1kHz 1mW Maximum Output (SPL): 122 dB Cable: Detachable reinforced twisted 5 ft with MMCX connectors User Replaceable ACCU-Filters: Yes Manufacturer Warranty: 2 Years Custom-Fit Option: Yes Product Code: P002217
