I've been using a pair of ATH-M50s for the past two years but I want to upgrade to a higher quality set of headphones, as well as try out open back headphones. I drive my headphones with a FiiO E17 through USB, yet I don't really get much of an increase in sound quality.
The headphones I've been looking at are the AKG K702s, Beyerdynamic DT-880s and the Sennheiser HD650s. Would my FiiO E17 be able to drive any of these headphones? If not, what DAC and Amp would you recommend? I would need to purchase from the UK though to keep shipping and import tax down.
The music I listen to is mostly Indie Rock, Indie Pop, Folk, Experimental, some Jazz and some Classical. I'd like the headphones to be fun to listen to, unlike my ATH-M50s which seem to lack in the bass department. If I run them through a portable CD player however [wthout the FiiO E17) which has a DAC built in as well as "S-R-S" equalization they sound a lot better than through my PC, which has been puzzling me for a while.
Which of the headphones would you recommend I purchase, and do you think I should buy a new DAC and Amp to drive the headphones suggested?