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- 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
- Impedance (@1kHz) 4XR (45 Ohms) 4SR (45 Ohms)
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Etymotic Research ER4XR Extended Range in-Ear Monitors