Insert Earphones

ER•3C™ earphones are the next generation of insert earphones, replacing ER•3A earphones, which have been the worldwide standard for audiometric insert earphones since 1985.

The frequency response and performance characteristics of ER•3C earphones are virtually identical to the original ER•3A earphones at all audiometric frequencies.

10 Ohm or 50 Ohm model available.

• ER•3C earphones (10 Ohm or 50 Ohm)
• 7' cable with dual-mono 6.33 mm (1/4") plugs
• 20 foam eartips (regular, 13 mm)
• 20 foam eartips (small, 10 mm)
• 2 foam eartips (large, 18 mm)
• Hook-and-loop neck strap