| Testing device | SB X-Fi Surround 5.1 |
| Sampling mode | 24-bit, 48 kHz |
| Interface | DirectSound |
| Testing chain | External loopback (line-out - line-in) |
| RMAA Version | 6.1.2 PRO |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | 0.1 dB / 0.2 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | inverted/inverted |
| Frequency response (from 40 Hz to 15 kHz), dB | +0.05, -0.03 |
Excellent |
| Noise level, dB (A) | -96.5 |
Excellent |
| Dynamic range, dB (A) | 92.4 |
Very good |
| THD, % | 0.0031 |
Very good |
| THD + Noise, dB (A) | -86.5 |
Good |
| IMD + Noise, % | 0.0052 |
Excellent |
| Stereo crosstalk, dB | -96.1 |
Excellent |
| IMD at 10 kHz, % | 0.0051 |
Excellent |
| General performance | Excellent |
| From 20 Hz to 20 kHz, dB | -0.08, +0.05 |
| From 40 Hz to 15 kHz, dB | -0.03, +0.05 |
Left |
Right |
|
| RMS power, dB | -95.5 |
-95.5 |
| RMS power (A-weighted), dB | -96.5 |
-96.5 |
| Peak level, dB FS | -78.6 |
-79.2 |
| DC offset, % | -0.0 |
-0.0 |
Left |
Right |
|
| Dynamic range, dB | +91.7 |
+91.7 |
| Dynamic range (A-weighted), dB | +92.4 |
+92.4 |
| DC offset, % | -0.00 |
-0.00 |
Left |
Right |
|
| THD, % | +0.0033 |
+0.0029 |
| THD + Noise, % | +0.0046 |
+0.0043 |
| THD + Noise (A-weighted), % | +0.0049 |
+0.0045 |
Left |
Right |
|
| IMD + Noise, % | +0.0054 |
+0.0050 |
| IMD + Noise (A-weighted), % | +0.0044 |
+0.0041 |
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -90 |
-90 |
| Crosstalk at 1000 Hz, dB | -96 |
-94 |
| Crosstalk at 10000 Hz, dB | -92 |
-92 |
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.0057 |
0.0053 |
| IMD + Noise at 10000 Hz, | 0.0050 |
0.0048 |
| IMD + Noise at 15000 Hz, | 0.0050 |
0.0047 |