You can buy them separately, the sound card for 500 and the headphones for 800. SoundBlaster DT990 PRO 250 OHMS headphones Of course, they are used, clean, and have no issues. Headphones for gaming, headphones for audio studios. Sound Blaster sound card. These are very well-known headphones, and most streamers and celebrities in general own them. They are very comfortable and isolate sounds from your surroundings. They make a difference in everything. The Sound Blaster sound card helps you run them at their full potential.