| Testing device | MOTU 624 |
| Sampling mode | 24-bit, 44 kHz |
| Interface | |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.4.0 PRO |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -1.5 dB / -1.5 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
| Frequency response (from 40 Hz to 15 kHz), dB | +0.02, -0.11 |
Excellent |
| Noise level, dB (A) | -117.6 |
Excellent |
| Dynamic range, dB (A) | 117.4 |
Excellent |
| THD, % | 0.0002 |
Excellent |
| THD + Noise, dB (A) | -108.7 |
Excellent |
| IMD + Noise, % | 0.0005 |
Excellent |
| Stereo crosstalk, dB | -116.9 |
Excellent |
| IMD at 10 kHz, % | 0.0007 |
Excellent |
| General performance | Excellent |
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.19, +0.01 |
-0.19, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.11, +0.01 |
-0.11, +0.02 |
Left |
Right |
|
| RMS power, dB | -116.2 |
-116.2 |
| RMS power (A-weighted), dB | -117.6 |
-117.5 |
| Peak level, dB FS | -84.6 |
-84.5 |
| DC offset, % | -0.0 |
-0.0 |
Left |
Right |
|
| Dynamic range, dB | +116.3 |
+116.4 |
| Dynamic range (A-weighted), dB | +117.3 |
+117.5 |
| DC offset, % | -0.00 |
-0.00 |
Left |
Right |
|
| THD, % | +0.0002 |
+0.0001 |
| THD + Noise, % | +0.0004 |
+0.0004 |
| THD + Noise (A-weighted), % | +0.0004 |
+0.0003 |
Left |
Right |
|
| IMD + Noise, % | +0.0006 |
+0.0005 |
| IMD + Noise (A-weighted), % | +0.0004 |
+0.0004 |
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -114 |
-116 |
| Crosstalk at 1000 Hz, dB | -116 |
-116 |
| Crosstalk at 10000 Hz, dB | -114 |
-97 |
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.0007 |
0.0006 |
| IMD + Noise at 10000 Hz, | 0.0006 |
0.0006 |
| IMD + Noise at 15000 Hz, | 0.0008 |
0.0007 |