Read http://www.tomshardware.com/reviews/high-end-pc-audio,3733-19.html
HI, i just bought the astro a50 headset, but in order to get the dolby sound you need an optical out. Unfortunately my pc dosent have an optical out. I have a gigabyte b85m-ds3h and a i7 4790. Im not an expert in computers. so i want to ask what do you rocommend me. Should i buy a sound card or a new motherboard.
i saw this soundboard at my local store at a good price
http://www.amazon.com/Creative-SB0880-Express-Blaster-Titanium/dp/B001E25KDK
also i saw an external one
http://www.soundblaster.com/products/Sound-Blaster-X-Fi-Surround-5-1-Pro.aspx#specs

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic