The World’s first noise-isolating, high-fidelity in-ear earphones, created an entire category of consumer electronics. These earphones are considered the reference standard to which all others are compared. ER-4® earphones are built at Etymotic in the

These great-sounding earphones use balanced-armature drivers for the highest response accuracy and virtually identical sound quality of the ER-4®.

PONO from music legend, Neil Young

These great-sounding earphones use balanced-armature drivers for the highest response accuracy and virtually identical sound quality of the ER-4®.