Etymotic ER3XR @ TechPowerUp
 

Etymotic's ER3-series in-ears aim to bring their ER4 design into a lower price category. Priced at $179, the ER3s are nearly half the price of the ER4-series in-ears, and their specification sheets show that they are not far off. We take a good look at the new in-ears to see how they fare against their bigger brethren.

https://www.techpowerup.com/reviews/Etymotic/ER3XR/