Pure Tone (Frequency range)
Air Conduction: 125 Hz to 12,000*** Hz
High Frequency*: 8,000 Hz to 20,000 Hz (8 kHz, 9 kHz, 10 kHz, 11.2 kHz, 12.5 kHz, 14 kHz, 16 kHz, 18 kHz*** and 20 kHz***)
Full Frequency Range*: 125 Hz to 20,000 Hz
Bone Conduction: 250 Hz to 8,000 Hz
Sound Field*: 125 Hz to 8,000 Hz
Paired Inserts*: 125 Hz to 8,000 Hz
Frequency Accuracy: ± 1 %
Total Harmonic Distortion: < 2% (earphones and paired insert phones*) < 5% (bone vibrator)