| Creative SB X-Fi | Xonar Direct 48K | Xonar Cable 48k | Xonar Direct 96k | Xonar Cable 96k | Xonar Direct 192k | |||||||
| Frequency response, dB | +0.05, -0.12 | Very good | +0.15, -0.08 | Very good | +0.15, -0.09 | Very good | +0.16, -0.08 | Very good | +0.16, -0.08 | Very good | +0.16, -0.08 | Very good |
| Noise level, dB (A) | -96 | Excellent | -116.6 | Excellent | -115.8 | Excellent | -103.4 | Excellent | -102.9 | Excellent | -106.8 | Excellent |
| Dynamic range, dB (A) | 96 | Excellent | 102 | Excellent | 102 | Excellent | 102.2 | Excellent | 102.2 | Excellent | 102.2 | Excellent |
| THD, % | 0.131 | Average | 0.131 | Average | 0.131 | Average | 0.0024 | Excellent | 0.0023 | Excellent | 0.0023 | Excellent |
| THD + Noise, dB (A) | -52.8 | Poor | -52.8 | Poor | -52.8 | Poor | -69.4 | Average | -69.4 | Average | -84.9 | Good |
| IMD + Noise, % | 0.256 | Average | 0.256 | Average | 0.256 | Average | 0.04 | Good | 0.04 | Good | 0.0042 | Excellent |
| Stereo crosstalk, dB | -42.8 | Poor | -98.2 | Excellent | -97.9 | Excellent | -97.4 | Excellent | -97.6 | Excellent | -98.5 | Excellent |
| IMD at 10 kHz, % | 0.326 | Average | 0.326 | Average | 0.326 | Average | 0.032 | Good | 0.033 | Good | 0.0076 | Excellent |
| General performance | Good | Very good | Very good | Very good | Very good | Excellent | ||||||