[Predator6sic6]

My current setup is x-fi fatal1ty > logitech z-680 headphone jack > DT 770 PRO, 80 ohm

I'll be using it for about 75% Games, 25% Music.

I'm looking to spend about $150 because I don't think I should spend more on an amp than I did on my headphones(If this is a bad way of thinking pleas let me know).

 

[Dorito123]

In that price range I would recommend the Total Bithead by Headroom. It will give you two things. An amp for your headphones and a Digital Audio Converter to give you a better source for your music as the X-fi is not known for great sound quality when dealing with music. It will have a USB input for your music and an analog input for your sound card so you can amplify your gaming as well. Best of all it has two headphone jacks, one for your powered computer speakers and one for your headphones. Its not the most powerful amp out there but it will give you all the functionality you will need and you can load it up with batteries and take it with you if you want. Otherwise it can sit on your desk and get power from the USB port. And its 150 bucks! Good Luck!

HeadRoom Total BitHead @ HeadRoom - Right Between Your Ears