etymotic ER4XR earphones are a new extended range earphone from etymotic. etymotic has long satiated the audio needs of music lovers but there are always those audiophiles that want more bass. The ER4XR brings the amazing sound of the ER4SR and extends the bass for slightly more boom and kick, without sacrificing the exacting audio they produce.
In the box:
5 ft. cord (Detachable) with 3.5mm gold plated stereo plug
¼” stereo phone adaptor
Assortment of eartips
Filter removal tool and replacement filters
Zippered storage case
What's the difference between the er4SR and the er4XR?
The ER4SR is a superbly accurate in-ear earphone which has a wonderfully flat response across all frequencies. The ER4XR is also very accurate but the bass has been slightly enhanced.
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