Listening to my newly acquired FiiO i1 dongle. This is like the lightning to 3.5mm adapter that Apple supplies to plug a 3,5mm earphone in. The i1 is much,much better. The DAC ( Codex Chip NAU88L25) can do a 192kz sampling rate but the iPhone limits it to a lossless 48kz. The cable is 31.5" long. The lightning end easily fits into my Otterbox Defender case. Output is 30 mW into 16 Ohms, 15mW into 32 Ohms. Frequency response 20-20k etc. The cable incorporates a microphone. The lightning plug housing as well as the DAC/Amp' 3.5mm side are metal. There is an controller app but it only facilitates firmware updates. Listening to some FLAC files on the iPhone with the i1 powering an Shure SE215 earphone set a considerable improvement over the Bluetooth earphones, and a big improvement over the Apple adapter. Looking for my beloved Etymotic HF3's it's encased but I haven't found that case yet. $39.99 at Amazon.