Etymotic ER20XS High Fidelity Earplugs Size:Standard (Clear) 5 mm listen only stereo

5 mm listen only stereo input (limited to 82 dB) for connection to external devices

Adjustable strap for a secure fit

- Removable lithium-ion battery

but we know you are out there

The target curve that Etymotic is using for tuning our IEMs differs slightly from the Harmon preference curve

Etymotic ER20XS High Fidelity Earplugs Size:Standard (Clear) 5 mm listen only stereoEtymotic ER20XS High Fidelity Earplugs are the highly awaited next generation of Etymotic's industry leading ETYPlugs High Fidelity Earplugs for musicians. Etymotic ER20XS High Fidelity Earplugs feature patented Hi Fi technology that lets you hear all frequencies clearly, just as if you had no plugs in, but at a lower volume level. Features New, discreet design Performance matches Etymotic's original high fidelity earplugs developed for musicians