I am using the Cowon D2 player since years and i am quite happy with the sound quality. Recently i bought a nexus 5. The sound quality on that is quite good but the volume is very low. So i have been thinking of buying a portable amplifier for that.
The headphones i use are Takstar Hifi 2050, Koss ksc 75 unmodded and Cyclone PR1 Pro ( These recently got spoilt and i am trying to figure out a way to repair them ).
Primarily i will still use the Cowon as my player and it is powerful enough to drive my Takstars beyond my listening volume. But the max volume for Takstar on the phone is very low. So i need an amp which will not only help me drive the Takstars to a good volume but also improve the sound quality through the Cowon D2. My budget is $60 ( max can be stretched to $70 if it is worth ). The amps that i saw available in that budget are
1. Nuforce MMP
2. Fiio E11
3. Soundmagic A-10
The music i listen to is mostly classic rock, fusion and trance ( lounge , chill). I would prefer a neutral output.
Which of these would be a good by for me. Also it is important that they improve the sound quality of the Cowon because that will be my primary player. If they dont then i would'nt want to spend on it just to use it with the phone. I would then save up and maybe later buy an amp which would improve cowon's quality ( but that would take sometime).