Asus Essence STX II User Manual page 24

Analog Out mode
Analog Out. The Analog Out settings are used adjust audio to match your actual
speaker setting, such as headphones and /.1 speakers. Essence STX II will play the
channels and process the D/Dolby sound accordingly. Select the correct speaker type
for your connected speakers.
Speaker Test. 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.
HP Advanced Setting. Click this button to select the gain tuning according to your
headphone impedance. The setting is also available for FP Headphone.
4 Chapter 4: Audio Center