Just wondering, how do you listen to music with your iPhone? 1) What is your music file formats, .m4a vs .wav vs .flac vs .mp3? 2) What is your amp? 3) What are your headphones? 4) What are your IEMs? 5) Any EQ setting?

Hi, I am pretty happy to listen to music on my iPhone. So, in order to enjoy the most out of it, I would like to pair an extremely portable DAC with the iPhone. Now I have a Dragonfly Red. It doesn't need an extra power source. A camera cable is totally enough. Just thinking, is this pair (Red...