| Test | 27 ohm | 300 ohm | Echo Mia MIDI |
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.07, -0.09 | +0.07, -0.10 | +0.08, -0.11 |
| Noise level, dB (A): | -80.0 | -79.9 | -94.9 |
| Dynamic range, dB (A): | 80.0 | 79.8 | 94.8 |
| THD, %: | 0.011 | 0.0042 | 0.0012 |
| IMD, %: | 0.050 | 0.049 | 0.0096 |
| Stereo crosstalk, dB: | -77.5 | -75.9 | -93.9 |