Leviathan V2 Settings Broken After Synapse 4 Update – EQ and THX Spatial Audio Not Working

I confirm that if you connect the panel to your phone via Bluetooth, the sound is good. If you can't fix it, please distribute the THX keys.

am experiencing this as well , this has also happened in the past whenever there is a major update, usually a new patch will fix it but i forgot how long it took. Now all my games sounds really bad , need to use headphones. Razer needs to acknowledge this , there isnt any comms mentioned anywhere. At least provide an ETA that its being worked on. Suprise this version of the product was able to push to production.

Same problem, nothing works in synapse 4 with leviathan v2. No EQ no THX nothing

Update:

I have Barracuda Pro and Leviathan V2

Both EQ’s don’t work.
Both devices do not enable THX

It’s a joke atp

When I reconnect the device, the Razer Leviathan v2 settings appear for 2 seconds. However, in other cases, the settings page is empty. This issue has been present for at least 7 months, as I purchased the Razer Leviathan v2 on January 14, 2025, and it was already present at that time.

 Additionally, there is a problem with the audio in NFS 2015, as the voices of the main characters are not audible, and only background sounds are present in cinematic scenes. P.S. I am using the latest firmware at the time of this post.

2000 years later...

Kraken v3 pro and Nommo v2 reporting in on same issue.

The custom eq was working with Kraken v3 pro. Didn't try Nommo v2. No THX.

I noticed another interesting thing. When the Razer Leviathan V2 is set as the main audio output device, and I also have the Razer BlackShark V2 Special Edition connected. 
If I change the equalizer on my headphones, the sound on the Razer Leviathan V2 changes for some reason, but the equalizer settings remain the same....