[Cocoflojo12]

Hello everyone,
 
As the title says i am looking for a Portable Amp/DAC
 
Nothing too costly i would like to keep it under $100
 
Here is what i've been looking at considering:
 
Fiio E11 Kilimanjaro
 
Fiio E07K Andes 
 
and Fiio E17
 
I already have my headphones picked out and they are the:
 
Audio-Technica ATH-A900X Audiophile Closed-Back Dynamic Headphones
 
I hope that will help 
 
Thanks so much to the people that help,
cocoflojo12