Stock or not (actually I've tested several settings with viper4android) sq is bad as far as my perception is concerned. With S3 my Phonaks 122 sounded amazing, with N5 they turned into a torture device, with Etymotic er4pt N5 is simply unbearable.
Edit: funny - I've just read your post above - you did the opposite, you sold fiio x3:) I wish I were satisfied with N5 sq, I wouldn't have spent money on extra hardware, but it simply is poor to me. Btw, I signed in just to express my bewilderment at what people in this thread have said.
Haha yeah. I really liked how the X3 sounded but I abhorred it overall as a device.
I haven't tried viper4android and can only give my impressions using poweramp with the eq setting I posted. It has great SQ with how I have it set up right now. I've tested it with my modded grados and my q701's(with an amp) and they both sound really good.
Btw what about the sound do you find simply unbearable?
Your best bet would be to find somebody who has the Nexus 5 and try to play around with eq settings. I like how my N5 sounds but I had to eq it pretty heavily in poweramp for it to sound good.
Edited by johanchandy - 2/18/14 at 1:30pm