| Test | SigmaTel Audio | Audigy NX |
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.38, -0.78 | +0.09, -0.28 |
| Noise level, dB (A): | -96.6 | -96.4 |
| Dynamic range, dB (A): | 92.2 | 88.2 |
| THD, %: | 0.0054 | 0.0079 |
| IMD + Noise, %: | 0.084 | 0.016 |
| Stereo crosstalk, dB: | -87.2 | -83.4 |