Test | iPhone4S | iPhone4 |
Frequency response (from 40 Hz to 15 kHz), dB: | +0.05, -0.57 | +0.02, -0.16 |
Noise level, dB (A): | -90.4 | -90.1 |
Dynamic range, dB (A): | 90.4 | 90.0 |
THD, %: | 0.0038 | 0.0053 |
IMD + Noise, %: | 0.0092 | 0.011 |
Stereo crosstalk, dB: | -65.4 | -72.5 |