HardwareER20Used by 1 personetymotic.com ↗“I use Etymonic ER20 earplugs for not-too-loud stuff.”Vi Hart Interview, Mathemusician, philosopher · via Uses ThisPeople who use ER20 also use360cam13DH3PRO14H1Adobe Photoshop1After Effects1Audacity1Barista Express1Björkudden Bar1Blender1