Asus Xonar U3 User Manual page 16

8.2.2 Analog Out mode
Headphone
1
2
3
No Item
1 Analog Out
2 Speaker Test
3 HP Advanced Setting
10
Description
The Analog Out setting is used to match your actual speaker
setting, such as headphones, 2 speakers (or 2.1). Xonar
U3 will play the channels and does the proper 3D/Dolby
sound processing accordingly. Select the correct speaker/
Headphone type for your connected speakers/ Headphone.
Click this button to show the speaker test window in the right
pane. Click the "play" button to test each speaker one by one
or click each speaker manually to test.
Note: The Speaker Test function is not available on Windows
Vista due to a limitation in its audio stack.
Clicking this button allows you to select the gain tuning
according to your headphone impedance.
Usage scenario or Headphone impedance
Exciter Mode or for >64ohms headsets
Pro-gaming Mode or for 32~64ohms headsets 9 dB boost
VOIP Mode or for <32ohms headsets
ASUS Xonar U3
DAC setting
16 dB boost
0 dB boost