| Test | Omni+IE4 | U7+IE4 | Omni+HD518 | U7+HD518 |
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.10, -0.13 | +0.27, -1.11 | +0.91, -0.55 | +1.13, -0.60 |
| Noise level, dB (A): | -89.0 | -105.0 | -87.5 | -103.1 |
| Dynamic range, dB (A): | 89.1 | 105.0 | 88.6 | 102.9 |
| THD, %: | 0.011 | 0.016 | 0.0054 | 0.011 |
| IMD + Noise, %: | 0.030 | 0.023 | 0.318 | 0.361 |
| Stereo crosstalk, dB: | -63.8 | -61.7 | -72.7 | -73.3 |
