Originally Posted by Wesley1985
I can spend arround 400 dollars
thanks for all the information so far
Personally with that kind of money I would be looking at something like Hisound Studio V (either 1st version or 3RD ANV) You could also consider Hisound Rocco BA which is a little cheaper. Or a nice portable amp like Leckerton UHA-6S MKII with LOD. (line out dock)
If you want to go in budget style check out FiiO E11 portable amp, grab a L9 LOD dock. It might be enough for you? We just don't know exactly what will be enough. That would set you back about $70 in total for the LOD and E11. Would give you a taste of what's out there without breaking your back or jumping in the deep end. The E11 will certainly give you more power and you could test the water levels.
What you need to ask yourself really, is do you need more power, louder, stronger signal. Or better overall Sound quality too. (of course in the best world we want both) I mean does the phone sound ok, but just isn't loud enough? Not enough power? If so then an amp is all you need such as FiiO E11 or Leckerton UHA-6S MKII
However, if you want a change of flavour / a taste of high end SQ go for the different sources.
Hopefully some others can chime in for you. Anyway that's a start, do some reading up on the names I've mentioned.
If you have any questions send me a PM I'll try the best I can to answer for you.Edited by H20Fidelity - 11/25/12 at 5:32pm