It looks new. Only been used less than a few hours. Sometimes it only has been opened and tested.

Etymotic Research ER4XR

is the in-ear 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 precision matched to within an industry leading 1dB across all frequencies from 100Hz to 10kHz. The new ER4XR incorporates sleek, anodized, laser-etched aluminum bodies and braided, reinforced 5 ft. detachable cables. The ER4XR is ideal for anyone looking for exceptional sound quality with just the right amount of low-end enhancement. Included with every pair of ER4XR earphones is an industry-exclusive channel matching compliance graph signed by the Etymotic engineer who precision matched and custom tuned the balanced-armature drivers. Every pair of ER4XR earphones is assembled and tuned in the United States.

Item Includes

• Etymotic Research ER4XR
• Detachable 5' Cable with 3.5mm Gold-Plated Stereo Plug
• 2 x Pairs Standard 3-Flange Eartips
• 2 x Pairs Large 3-Flange Eartips
• 2 x Pairs Large Black Foam Eartips
• Filter-Removal Tool and Filters
• Shirt Clip
• 1/4" Stereo Phone Adaptor
• Zippered Storage Case

High performance balanced armature drivers are precision matched to within 1 dB

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

2 year manufacturer's warranty provided for products purchased from authorized resellers

Type: In-ear

Transducers: High-performance, balanced-armature micro-drivers

Left/Right Channel Matching: Within 1 dB from 100 Hz to 10 kHz

Frequency Response: 20 Hz to 16 kHz

Noise Isolation: 35 to 42 dB

Impedance: 45 Ohms

Sensitivity: 98 dB with 100 mV drive 104 dB with 200 mV drive

Maximum Output: 122 dB

Cable: Detachable, 5' / 1.5 m

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