Little tip, I've used alot of different sound set ups since first trying CSS, but nothing comes close to the headphones I'm using right now.

the best part is, theyre under £10. Game's own stereo headset cost £7.50 and are ideal for CSS... having used them for the past few days it has allowed me to hear and locate enemies I would usually miss.

Combining Stereo headphones with good use of your radar can give you an early advantage on your enemy. So if you see me shooting early... It's not a wall hack... your just bloody noisy