You could play around with some of the included EQ profiles…but honestly, I just kind of had to get used to it. And I know that’s not an amazing answer. And I’m not sure it applies to everyone.
DTS creates their room simulation algorithm by recording speakers in an actual room, and then mimicking that performance in the headset. The hollow sound comes from trying to add a sense of room space, I think.
Most virtual surround systems have some degree of this sort of audible artifacting. Razer surround doesn’t do it as badly, but has its own minor issues with compressing certain frequencies and overblowing others.
Sorry again I don’t have a better answer! If you use it for a few days and don’t adjust to it, and don’t find an EQ profile you like, there’s really nothing else you can do unfortunately.
Thanks for reading.