or you could try a headphones amplifier, there are several just do a search, you could try your hands at building your own like the cmoy amp: How to Build the CMoy Pocket Amplifier. they also have somthing like a tutorial on building it on revision 3.
Check anythingbutipod.com, they have a review for a very cheap but good amp the Fiio e3: FreemattandGrace.Com
try one of those options if you get a chance, post your results.
