Etymotic Research ER4SR Reference Earphones Etymotic Research making them a perfect companion

making them a perfect companion to your existing setup no matter if you’re working in a professional studio

We have succeeded in leveraging the experience of developing and manufacturing our own dynamic drive unit to draw forth the advantages of pure Beryllium

Following these came the E5000 / E4000 re-cable models

5mm cable adapter for laptops

making the Pro X30 the perfect choice for use on stage or other noisy environments

Etymotic Research ER4SR Reference Earphones Etymotic Research making them a perfect companionOverview ER4SR is the highest performing single driver in ear monitor. The IEM shells are made of anodized aluminum, CNC machined with extremely tight tolerances. Using a single Balanced Armature (BA) driver allows for extremely accurate IEM without the added complexity of crossovers, and helps keep the aluminum body small and slim. The included high quality user replaceable cable is reinforced and twisted, to improve longevity and durability.