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 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 DAC setting Exciter Mode or for >64ohms headsets 16 dB boost Pro-gaming Mode or for 32~64ohms headsets 9 dB boost VOIP Mode or for