| Test | 27 ohm | 300 ohm | Echo Mia MIDI |
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.07, -0.10 | +0.08, -0.11 | +0.08, -0.11 |
| Noise level, dB (A): | -95.2 | -95.1 | -95.0 |
| Dynamic range, dB (A): | 95.1 | 95.0 | 95.0 |
| THD, %: | 0.0037 | 0.0022 | 0.0013 |
| IMD, %: | 0.011 | 0.0096 | 0.0096 |
| Stereo crosstalk, dB: | -90.1 | -95.2 | -92.6 |