I recently purchased a GSP600 headset, and I was satisfied with it until I tried it out for pc gaming. I don't consider myself an audiophile, but I do appreciate having proper sound quality. When listening to audio on youtube for example, I have no complaints about the audio quality, but when I was playing an FPS game, I found it underwhelming. Compared to my previous headset, the audio isn't too clear when it comes to which direction a sound came from, and nearby gunshots + footsteps lack crisp and clear sound, they sound rather muffled. On top of that the audio in game has too high treble and bass for my liking, I figure that could be something easily solved by an amp/external sound card, but I'm a complete noob regarding this, I just don't have the experience.
If someone could dumb this down for me in layman's terms and give advice, I'd very much appreciate your wisdom.