Can GC553G2 /GC575/GC553Pro support 5.1 multichannel audio ?

Yes.GC553G2/GC575/GC553Pro Supports 5.1 multi-channel audio. LPCM format supports stereo (LPCM 2.0ch) only
But please note  GC553G2/GC575/GC553Pro support mutlichannel 5.1 (e.g., PS5, Xbox series X)  while NOT support 5.1 LPCM (e.g., Switch 2).




1. Please use GC553G2 FW V1.0.7.7 or later and use Streaming Center and follow below steps

For GC575 please update GC575FwUpdateTool_1.1.6.12 :

When you see Multchannel detected in Streaming Center please follow below:

Check Video Source to confirm the source recognize 5.1 channel, then choose Audio 5.1 on the Setting icon in Streaming Center




2. When you use OBS, you need to Install from here:

After installation, execute Streaming Center PLUG installation

After installation, when you launch OBS Studio, you will see Streaming Center PLUG appear on the above taskbar, click Manage Streaming Center PLUG
 
Next, click on Install on Multichannel Audio, then click Next
 

After installation , you can see Multichannel Audio is installed.
 

Choose 5.1 on the Audio tab, then click on Apply


Go into Source section, you need to choose AVerMedia Multichannel Audio

 
Click OK



You will see AVerMedia Multichannel Audio appear in Source section, click OK
 

Then you can capture multichannel audio

 

Additional Troubleshooting Steps (OBS Multichannel Audio Issue)

If you are unable to successfully capture multichannel audio when using OBS Multichannel, for example:

-Only stereo channels are shown for AVerMedia Multichannel Audio in the Audio Mixer

-The audio level meter does not move

Please follow the steps below:

1 Confirm the source device is outputting multichannel audio
Make sure your source device is currently outputting Multichannel 5.1 audio. For example, on PS5 or Xbox Series X, set the audio format to Dolby Digital, and ensure you are inside an actual gameplay scene.
(Multichannel 5.1 audio is typically not output when staying in the console menu.)

2 Reapply OBS channel settings

In OBS audio settings, perform the following steps in order:

-Set Channels to Stereo, then click Apply
-Restart OBS
-Set Channels back to 5.1, then click Apply
-Restart OBS again

After completing these steps, multichannel audio capture should resume normally.



202507