Apologies for going off-topic. Am looking for recommendations on sub-$50 DAPs - vertically-oriented, simple user interface, slim and, typically, quite weak output. I had originally wanted to find a housing for this headphone amp board from my old stash. It makes a nice weighty sound. I then realise this could be a good basis for a DAP, if I can mash it with a slim DAP internals and house them together back-to-back (removing slim DAP's battery and rear housing). I have no clue what is a halfway decent sounding cheap slim DAPs I see on AliExpress. There used to be a few threads, but no one talks about them anymore. Any recommendation on these slim DAPs will be helpful to me. Thanks. EDIT: Just to close out this off-topic post. I just ordered Benjie X3 from taobao for almost no money (around US$10). I will probably create another DIY thread if this DAP/Amp mash-up turns out any good.