Etymotic ER4XR in-ear headphone: Top-notch sonics and a comfortable fit
Jan 21, 2020
3 minutes
BY JON L. JACOBI
If you have the money, the $350 Etymotics ER4XR (Extended Range) in-ear headphone is tuned to near perfection, with just a smidgen more bass than their equally good-sounding and like-priced ER4SR (Studio Reference) cousins.
DESIGN
Etymotic claims on its website that the company invented the noise-isolating in-ear headphone. But noise isolating simply means blocking your ear canal so you don’t hear outside sound. This is not to be confused with active noise cancellation, a process
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