Here's an attempt to make a list of all Lightning-based DACs. WHY The iPhone comes with a lame "adapter" now, or, rather, a very simple AMP/DAC. Cheap, very thin wire that looks like it will break in 2-3 months, not enough to drive most headphones, white rubber coating gets dirty easily. There is an obvious way to use pretty much any good portable DAC/AMP via the Lightning Camera Adapter [$30], which is exactly the way you connect good stuff like Chord Mojo to your iPhone. However, external DAC/AMPs are still heavy and bulky, may require a lot of room in your pocket or a bag. Way too geeky and not very portable. What about getting a very light iPhone Lightning DAC, powerful enough to drive somewhat good headphones, yet something that still fits in the pocket with ease. WHAT This is the stuff that I was able to find so far. Please post your findings to add to this list and your reviews if any. FiiO i1 http://www.fiio.net/en/products/67 $40 Head-Fi Thread: https://www.head-fi.org/f/threads/i...rst-mfi-headphone-amplifier-from-fiio.803133/ Reviews: http://www.ilounge.com/index.php/reviews/entry/fiio-i1-lightning-to-3.5mm-headphone-adapter http://www.apothetech.com/fiio-i1-iphone-headphone-adapter/ S.M.S.L. iCON http://www.smsl-audio.com/productshow.asp?id=93 $70/70 quid? (unclear) Anything else?