Frequency response: 20 Hz to 16 kHz
Tolerance: ±3 dB to 6 kHz, ±6 dB to 16 kHz re nominal
Transducer type: Balanced Armature
1 kHz sensitivity: 97 dB SPL for a 0.1 volt input
Impedance: 48 Ohms
Maximum output: 120 dB SPL
Maximum continuous input: 2.5 Vrms
Weight: less than 1 oz.

Response of ER•6 & ER•4 Earphones Compared to Target (100% Accurate Reproduction)