I am pretty new at this topic, and as of this morning I wasn't even sure my phone (a Samsung Not 8) would play above MP3 (although I strongly suspected it would). I tested it with both FLAC and APE and it worked fine with both formats. Now, I have ordered a new set of headphones, the Sennheiser HD 579 and I am considering a mobile (as in small, battery operated) amp/DAC that will pull lossless from my phone for those times when I am away from home, particularly when away from a 120v power source. I am looking at this device: Fiio E17K ALPEN 2 USB DAC Has anyone had experience with pulling digital files out of a phone to a device like this? I realize that I can just plug my headphones straight into the phone, but I am already looking for an upgrade it would seem! Not only looking for a better DAC than is likely in a cellphone, but perhaps a better amp to drive my 50 ohm HP's What say you? Is this something worthwhile, or is there a better headphone DAC/amp out there? Or do I just need an amp as the DAC in the Note 8 is really that good? I know I should probably wait and see if I like the sound of my headphones before spending more money, but I wont have a basis for comparison, and I am going on a trip for a few weeks so I want to be prepared. It takes advanced planning living this remote to get the stuff here with how slow and delayed things arrive via the mail.