RightMark Audio Analyzer test report
| Testing device | iPhone4 Line-out 24bit |
| Sampling mode | 24-bit, 48 kHz |
| Interface | |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.2.3 |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -3.3 dB / -2.8 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | inverted/correct |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB | +0.02, -0.10 |
Excellent |
| Noise level, dB (A) | -92.9 |
Very good |
| Dynamic range, dB (A) | 93.0 |
Very good |
| THD, % | 0.0042 |
Very good |
| THD + Noise, dB (A) | -82.8 |
Good |
| IMD + Noise, % | 0.0078 |
Excellent |
| Stereo crosstalk, dB | -80.8 |
Very good |
| IMD at 10 kHz, % | 0.0085 |
Very good |
| General performance | Very good |
Frequency response
| From 20 Hz to 20 kHz, dB | -0.34, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.10, +0.02 |
Noise level
Left |
Right |
|
| RMS power, dB | -91.9 |
-91.7 |
| RMS power (A-weighted), dB | -92.9 |
-92.8 |
| Peak level, dB FS | -76.7 |
-76.1 |
| DC offset, % | +0.0 |
+0.0 |
Dynamic range
Left |
Right |
|
| Dynamic range, dB | +92.1 |
+91.9 |
| Dynamic range (A-weighted), dB | +93.1 |
+93.0 |
| DC offset, % | +0.00 |
+0.00 |
THD + Noise (at -3 dB FS)
Left |
Right |
|
| THD, % | +0.0045 |
+0.0040 |
| THD + Noise, % | +0.0071 |
+0.0066 |
| THD + Noise (A-weighted), % | +0.0076 |
+0.0069 |
Intermodulation distortion
Left |
Right |
|
| IMD + Noise, % | +0.0080 |
+0.0076 |
| IMD + Noise (A-weighted), % | +0.0066 |
+0.0063 |
Stereo crosstalk
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -63 |
-63 |
| Crosstalk at 1000 Hz, dB | -80 |
-80 |
| Crosstalk at 10000 Hz, dB | -79 |
-79 |
IMD (swept tones)
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.0088 |
0.0084 |
| IMD + Noise at 10000 Hz, | 0.0092 |
0.0088 |
| IMD + Noise at 15000 Hz, | 0.0082 |
0.0075 |