All the Features of the ER•3A:
- Approximates TDH-39, -49 and-50 response at the eardrum
- 70+ dB isolation between ears: reduces the need for masking
- Eliminates collapsed ear canal problem
- 30+ dB external noise exclusion
- Calibrated in 2 cc Coupler
- Can be calibrated according to ANSI S3.6-1996
Plus:
- 20 dB higher maximum output at 6 and 8 kHz than ER•3A
- Easier to calibrate at high frequencies
- No front tubes
System Includes
- Earphones (10 Ohm or 50 Ohm immittance)
- Dual-mono 7 ft. cable assembly
- 50 foam eartips (regular, 13 mm)
- 10 foam eartips (baby, 10 mm)
- 4 foam eartips (jumbo, 17 mm)
- Neckstrap
- Shirt clip