I am a new owner of a Dragonfly Black, purchased mainly to be used with the laptop as I used to hear a hiss in the headphone jack. I also purchased a new set of headphones (Hifiman HE400i). Anyway, maybe it is my ears, or maybe not, but I cannot tell a discernible difference in SQ between the DFB, Laptop Headphone jack, nor my iPhone 8 (with the $9 dongle). I actually got the camera adapter for my phone also to be able to use the DFB together with...and no difference either. This of course is after volume matching. I'm using Tidal Hifi account for streaming. I suppose my question is, should i have expected less of the DFB? There was no "wow" moment, and I've listened and done A-B-C testing the last few days. Getting ready to package up the DFB for return (plus the amp is a bit too strong for the HE400i; I don't get enough volume control as I can reduce the gain). Thoughts?