Sound setting only apply to USB audio mode, that doesn’t affect audio setting in other audio mode. Set of sound setting parameters include master volume and audio setting in this page.
No upsampling function in USB audio mode. You should
Set speakers treble level, total 15 level of 0.5dB each step.
Set subwoofer level, total 15 level of 1dB each step.
Speaker sound timbre
Select speaker sound timbre :
Natural – original sound without sound processing
Airy – extended high freqeuncy resposne to compensate hearing loss
Rich – enrich mid vocal to reproduce full bodied sound
Comfort – cater for over processed sound source, recommand for TV sound
Select up-sampling interpolation method and filter type.
Select pseudo LFE channel bass effect.
Trun on loudness will increase sound clarity at low volume play.