The ER4XR is a high-performing in-ear monitor with a single balanced armature (BA) driver, making it highly accurate and compact. The anodized aluminum shells are CNC machined with tight tolerances and are paired with a durable, replaceable cable. Known for its strong passive isolation, the ER4XR offers 35-42 dB of noise reduction, making it ideal for audiophiles who seek an immersive audio experience. The right and left channels are matched within 1dB across frequencies, providing a consistent and enjoyable listening experience. The ER4XR offers a "fun" sound signature with added bass compared to the reference model, ER4SR. ER4SR is ideal for sound engineers and audiophiles who prefer a flat and accurate sound reproduction, while ER4XR is for those who enjoy a bit of added bass presence. The frequency response graphs are designed to deliver a perceptibly flat frequency response that compensates for the resonance in the ear canal. The target frequency response was developed by Etymotic based on over 20 years of human hearing and acoustics research. Each ER4SR and ER4XR comes with a channel-matching compliance graph.

Features:

• High performance Balanced Armature drivers are precision matched to within 1 dB
• Transducers: Single high-performance balanced armature per channel.
• Specially designed for uncompromising accuracy in the mid to high frequencies with a bit of extra presence in the lower end
• Sleek, anodized, laser etched aluminum body and braided, reinforced detachable 5 ft. Cables with custom MMCX connectors
• 35-42 dB of noise isolation with a max output of 122 dB

Product Details:

• Brand: Etymotic
• Color: Black
• Ear Placement: In Ear
• Form Factor: In Ear
• Impedance: 45 Ohm
• Noise Control: Sound Isolation
• Headphones Jack: 3.5 mm Jack
• Model Name: ER4XR
• Connectivity Technology: VGA
• Special Feature: Etymotic designs products to measure, improve and protect hearing, and enhance the listening experience of music lovers everywhere. Audio engineers, musicians and audiologists at Etymotic have generated over 100 patents issued and pending.
• Included Components: In Ear Monitors 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
• Age Range (Description): Adult
• Material: Aluminum
• Compatible Devices: Cellphones
• Control Type: Noise Control
• Cable Feature: Detachable
• Item Weight: 0.37 Kilograms
• Package Type: Standard Packaging
• Unit Count: 1.0 Count
• Style: Earphone
• Number of Items: 1
• Audio Driver Type: Balanced Armature Driver
• Carrying Case Weight: 150 Grams
• Is Autographed: No
• UPC: 846430002029
• Global Trade Identification Number: 29
• Manufacturer: Etymotic Research
• Product Dimensions: 0.39 x 1.18 x 0.39 inches
• Item Weight: 13 ounces
• Item model number: ER4XR
• Is Discontinued By Manufacturer: No
• Date First Available: June 17, 2016
• Country of Origin: Vietnam