- they are all the same perfect!
| Test | OPA627AP | OP275 | AD8610 | AD8397 |
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.02, -0.12 | +0.02, -0.12 | +0.02, -0.12 | +0.02, -0.12 |
| Noise level, dB (A): | -103.0 | -102.8 | -102.8 | -102.1 |
| Dynamic range, dB (A): | 102.9 | 102.7 | 102.7 | 102.0 |
| THD, %: | 0.0004 | 0.0004 | 0.0004 | 0.0004 |
| IMD, %: | 0.0026 | 0.0027 | 0.0027 | 0.0029 |
| Stereo crosstalk, dB: | -100.4 | -103.0 | -102.0 | -100.0 |