| Testing device | ASUS Xonar Essence STX Phone 1644 |
| Sampling mode | 16-bit, 44 kHz |
| Interface | |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.2.1 |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | OFF |
| Level change | 0.0 dB / -0.1 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
| Frequency response (from 40 Hz to 15 kHz), dB | +0.02, -0.13 |
Excellent |
| Noise level, dB (A) | -93.0 |
Very good |
| Dynamic range, dB (A) | 90.8 |
Very good |
| THD, % | 0.0031 |
Very good |
| THD + Noise, dB (A) | -83.5 |
Good |
| IMD + Noise, % | 0.0086 |
Very good |
| Stereo crosstalk, dB | -91.2 |
Excellent |
| IMD at 10 kHz, % | 0.0096 |
Very good |
| General performance | Very good |
| From 20 Hz to 20 kHz, dB | -0.25, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.13, +0.02 |
Left |
Right |
|
| RMS power, dB | -92.5 |
-92.3 |
| RMS power (A-weighted), dB | -93.2 |
-92.8 |
| Peak level, dB FS | -77.3 |
-77.2 |
| DC offset, % | -0.0 |
-0.0 |
Left |
Right |
|
| Dynamic range, dB | +90.1 |
+90.2 |
| Dynamic range (A-weighted), dB | +90.8 |
+90.8 |
| DC offset, % | -0.00 |
-0.00 |
Left |
Right |
|
| THD, % | +0.0032 |
+0.0031 |
| THD + Noise, % | +0.0070 |
+0.0070 |
| THD + Noise (A-weighted), % | +0.0067 |
+0.0067 |
Left |
Right |
|
| IMD + Noise, % | +0.0085 |
+0.0087 |
| IMD + Noise (A-weighted), % | +0.0076 |
+0.0077 |
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -87 |
-88 |
| Crosstalk at 1000 Hz, dB | -89 |
-91 |
| Crosstalk at 10000 Hz, dB | -90 |
-90 |
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.0095 |
0.0094 |
| IMD + Noise at 10000 Hz, | 0.0095 |
0.0099 |
| IMD + Noise at 15000 Hz, | 0.0094 |
0.0098 |