a few weeks to a month ago i sent to MP4Nation my fiio e17. They told me they had to send it to Fiio to get it fixed or replaced. Its been a month and Fiio said they don't have stock of it and to top it off MP4Nation is keeping my headphone amp for some reason. Here's a direct quote from Fiio when i emailed them about it:
Thank you for your mail and support to FiiO!
Sorry, we recently haven't received any pcs RMA from MP4 NATION, I think MP4 nation will wait for to collect enough quantity to send them back together, Also we don't have any pcs E17 in stock now , it will not has E17 in stock until in the end of June, I'm afraid you still need to wait several weeks to get your E17 , sorry to keep you waiting .
If you have any other question, please feel free to contact us!
.... I guess July i will have my headphone amp back :( If your wondering what broke it was the headphone output. It started to cut out the audio and i had to wiggle the plug around to hear anything at all.