| Testing device | HD400 fwd |
| Sampling mode | 24-bit, 96 kHz |
| Interface | ASIO |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.3.0 |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -1.1 dB / -0.9 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
| Frequency response (from 40 Hz to 15 kHz), dB | +0.30, +0.10 |
Very good |
| Noise level, dB (A) | -100.6 |
Excellent |
| Dynamic range, dB (A) | 100.8 |
Excellent |
| THD, % | 0.0066 |
Very good |
| THD + Noise, dB (A) | -81.0 |
Good |
| IMD + Noise, % | 0.030 |
Good |
| Stereo crosstalk, dB | -73.4 |
Good |
| IMD at 10 kHz, % | 0.024 |
Good |
| General performance | Very good |
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.23, +0.13 |
-0.06, +0.30 |
| From 40 Hz to 15 kHz, dB | -0.07, +0.13 |
+0.10, +0.30 |
Left |
Right |
|
| RMS power, dB | -98.9 |
-99.1 |
| RMS power (A-weighted), dB | -100.6 |
-100.7 |
| Peak level, dB FS | -80.2 |
-79.5 |
| DC offset, % | +0.0 |
+0.0 |
Left |
Right |
|
| Dynamic range, dB | +98.8 |
+99.1 |
| Dynamic range (A-weighted), dB | +100.7 |
+100.8 |
| DC offset, % | -0.00 |
+0.00 |
Left |
Right |
|
| THD, % | +0.0075 |
+0.0058 |
| THD + Noise, % | +0.0079 |
+0.0063 |
| THD + Noise (A-weighted), % | +0.0100 |
+0.0079 |
Left |
Right |
|
| IMD + Noise, % | +0.0145 |
+0.0449 |
| IMD + Noise (A-weighted), % | +0.0096 |
+0.0114 |
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -87 |
-85 |
| Crosstalk at 1000 Hz, dB | -72 |
-73 |
| Crosstalk at 10000 Hz, dB | -50 |
-50 |
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.0295 |
0.0260 |
| IMD + Noise at 10000 Hz, | 0.0204 |
0.0194 |
| IMD + Noise at 15000 Hz, | 0.0241 |
0.0235 |