Hi Luukas
I thought I posted a response before, but I didn't press submit, obviously
The DT880 would be slumming it a little with a basic Behringer mixer. Things get better with their 4-bus mixers which have noticeably better phone outs but then you're in Maxed-Out PIMETA territory and you might as well get one of those.
******************
The small Behringer mixers are ideal for budget computer/gaming use with high-impedance (and low-impedance for that matter) studio cans for what I said: There's plenty of power to the headphone jack, you have signal routing options, EQ options and it's not just the PC you can connect... a deck you may have lying around, a portable, etc these can be hooked up to the unit. You can also connect a speaker to the main outs of the mixer and switch between phone and speaker use. and all this in one box.
So now I've said you can use a mixer, I suppose I should go about explaining it.
Here's the UB802:
From the top:
You'll notice that all of the connections are 6.5mm / 1/4" jacks. This means that you will need to go to your Radio Shack and buy some 6.5mm to Phono converters.
Like one of these:
http://www.radioshack.com/product.as...5Fid=274%2D884
OK, disregarding the Aux send and FX return, you plug your phones into the Phone jack. If you have speakers, you plug them into the Main Out L/R jacks. If your speakers are terminated with a 3.5mm jack, then you'll need a converter.
If you need control over the gain of your PC source, plug the PC into inputs 1 and 2. You'll notice the gain controls on those inputs. Otherwise just hook it up to the other Line-level inputs 3/4 or 5/6.
Set the Left PC input channel's pan to extreme left, and the Right PC input channel's pan to extreme right.
If you have speakers connected, switch them off. Switch everything on, and and turn the input level knobs on the appropriate inputs to the "0" setting. Set the Main Mix volume to "0". Play something back through your PC and adjust the Headphone/Control Room volume to a comfortable level.
If necessary, adjust EQ to suit. That's more or less it.
I ought to stress that if you intend to listen to music more than gaming, that an amp like a PIMETA is advised. However for hard-to-drive cans, low-end mixers with decent quality (such as the Behringer and slightly better the Soundcraft) are in my opinion the most economical and most suitable 'amps' for use with a PC when gaming. But even if you do just listen, the routing versatility of mixers may be attractive if you have multiple sources around your PC.