So I just got beyer Dt5130 , obviously I want to try to get the best I can get with this headphones , so I am going to try and get both an external soundcard and an amp. So I have read here and there and watch videos. I was deciding on fiio e17 , but then I read the headfi buying guide. What is the actual difference in term of functionality and quality of the
1. Fiio e17
2. Fiio e10
3. Fiio e7
I want something that can be both and amp and a USB Dac for my PC , I am currently using an Ipod touch , But I would be getting a galaxy note 2 sometimes later , which one is the best for me?