This is a 
MME API output to "What U Hear" input loop RMAA test of 
Creative Sound Blaster X-Fi HD (Digital Music Premium HD) at 24bit/96kHz. Tests have made without resampling by Windows 7 drivers by setting it to 24bit/96kHz.
Testing chain: MME output (24bit/96kHz.) -> "What U Hear" input (24bit/96kHz.):
- Frequency response (from 40 Hz to 15 kHz), dB : +0.00, -0.00
 
- Noise level, dB (A) : -149.4
 
- Dynamic range, dB (A) : 133.2
 
- THD, % : 0.0000
 
- THD + Noise, dB (A) : -128.1
 
- IMD + Noise, % : 0.0002
 
- Stereo crosstalk, dB : -148.5
 
- IMD at 10 kHz, % : 0.0000
 
  | 
| Frequency response | 
  | 
| Noise level | 
  | 
| Dynamic range | 
  | 
| THD + Noise (at -3 dB FS) | 
  | 
| Intermodulation distortion | 
  | 
| Stereo crosstalk | 
  | 
| IMD (swept tones) | 
P.S.
See this 
link is a line output to line input loop RMAA test at 24bit/48kHz.