I guess i try out the dt 880s first.
I know that I can only get 2-channel audio with that setup but it is way better than those fake simulation 5.1 like Dolby Headphone in my opinion. I might get a true 5.1 System later on.
I have a question about equalizing of Headphones. The e17 gives you options for example in increasing the bass. If i feel a lack of bass, is it recommended to use it?
What are your opinions on this subject? Those the Sound kinda get fake?
Should have no problem using the E17 to increase the bass, but I do not think you would need to use that feature with the DT880 (or DT990).
I'm assuming the PS3 is what you use for gaming?
One option is to get a used Yamaha A/V receiver, Yamaha's come with their own headphone surround sound (Silent Cinema).
A receiver should support both Dolby and DTS audio.
And you can run an HDMI cable from the PS3 to the receiver.
Also a decent receiver should be able to drive 600-Ohm headphones.
Plus you can add a 5.1 speaker setup in the future.