| Testing device | iU2 |
| Sampling mode | 16-bit, 48 kHz |
| Interface | MME |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.2.3 |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | 2.8 dB / 2.9 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
| Frequency response (from 40 Hz to 15 kHz), dB | +0.26, -1.11 |
Average |
| Noise level, dB (A) | -95.0 |
Excellent |
| Dynamic range, dB (A) | 95.1 |
Excellent |
| THD, % | 18.982 |
Very poor |
| THD + Noise, dB (A) | -11.9 |
Very poor |
| IMD + Noise, % | 17.281 |
Very poor |
| Stereo crosstalk, dB | -95.5 |
Excellent |
| IMD at 10 kHz, % | 14.318 |
Very poor |
| General performance | Average |
| From 20 Hz to 20 kHz, dB | -3.36, +0.26 |
| From 40 Hz to 15 kHz, dB | -1.11, +0.26 |
Left |
Right |
|
| RMS power, dB | -94.1 |
-94.0 |
| RMS power (A-weighted), dB | -95.1 |
-95.0 |
| Peak level, dB FS | -81.9 |
-80.2 |
| DC offset, % | -0.0 |
-0.0 |
Left |
Right |
|
| Dynamic range, dB | +94.1 |
+94.0 |
| Dynamic range (A-weighted), dB | +95.2 |
+95.1 |
| DC offset, % | -0.00 |
-0.00 |
Left |
Right |
|
| THD, % | +18.9679 |
+18.9962 |
| THD + Noise, % | +18.9680 |
+18.9963 |
| THD + Noise (A-weighted), % | +25.3350 |
+25.3732 |
Left |
Right |
|
| IMD + Noise, % | +17.2684 |
+17.2936 |
| IMD + Noise (A-weighted), % | +13.9714 |
+13.9955 |
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -93 |
-93 |
| Crosstalk at 1000 Hz, dB | -94 |
-95 |
| Crosstalk at 10000 Hz, dB | -91 |
-92 |
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 18.7753 |
18.8057 |
| IMD + Noise at 10000 Hz, | 12.4874 |
12.5143 |
| IMD + Noise at 15000 Hz, | 11.6663 |
11.6605 |