This video is going to show the comparison between 3D Surround ON and OF in music mode. Please experience our demo video with your regular stereo headphones.  Make the stereo music more surrounding and vivid just as coming from the live show. Hear your music on the headphones more naturally for a longer time and do not have brain fatigue any more. Xear™ Surround Headphone creates a realistic 5.1/7.1CH surround sound field over stereo headphones. Combined with 3D sound processing in games, gamers could enjoy amazing 3D gaming sound experience and combat advantages. It also delivers more natural, spatial sound stage for stereo music just as real as playback from speakers for longer listening on headphones without fatigue.

USB Audio is a mature and standard digital audio interface for the major consumer products to transfer Music and Sound. The PC/NB with Windows, Mac, Linux operating system, Mobile phone with Android and iOS. They all support USB Audio. Even with the Gaming Console, PS4/PS5, Xbox 360/One, Switch, the USB Audio works as well. So, the USB Audio almost becomes the major peripheral audio interface. USB Audio has its standard spec. Now, the latest release standard is UAC 3.0 which is focus on Type C and power saving device. The major USB Audio Products on the market, for example USB Headset, USB Microphone, Docking, they are UAC1.0 and UAC 2.0. It is because UAC1.0 and UAC2.0 with the best compatibility for all the existing platforms.

May I setting default sample rating by firmware? 

Does I2S in of CM108B support stereo?

With the jack detect driver,  at playing &  unplug phone jack the playback app sometimes will crush, must reopen playback app (play youtube easier happen)

When the microphone report 24bit/96K at 1ch, why it doesn't show the 24bit on Windows mixer?

Can HS100B/CM119B/CM108B set to 128 words of 8 bits organization?

Can I used 5V instead of REGV with MODE/PWRSEL pins?

C-Media's latest Environmental Noise Cancellation technology greatly improves the quality of your voice by cancelling out background noise, such as internet café gaming noise, Karaoke music and more. This means caller hear only clear, natural voice via C-media's Environmental Noise Cancellation. It provides you a better quality of communication!