How to improve audio performance on high end gaming pc? [closed]
You'll need a good headset first and then maybe another sound card depending on your needs. Nowadays onboard sound cards are usually better than cheap dedicated ones, so you should be fine with just a headset.
Even the best sound cards can't do anything about a shitty headset. It's pretty much like having a Porsche on a cobbled road: it works, but it's no fun at all.
Bottlenecks in terms of audio quality are almost always due to the speakers themselves. Investing in a pair of good noise cancelling headphones can drastically improve your audio quality in games.