ER4XR 3-way design with separate drivers

3-way design with separate drivers for bass

As soon as the volume gets too high

• Cable tie

You can choose between two modes: amplification or natural hearing

ER4XR 3-way design with separate driversPluses and minuses Reference class detail display. Single Balanced Armature driver for maximum accuracy. Extra sub bass, nicely tuned, but not excessive. Deep fit takes some getting used to. Product description The ER4XR is Etymotic's flagship model: an ultra precise in ear monitor with a subtly enhanced low end for a slightly more musical sound. This eXtended Response version of the ER4 series combines reference class detail reproduction with a touch