I know the question has been asked, but I have yet to see a reply on the headphone output quality of the Mytek. So, I am asking again. Any comments on the the headphone output quality? Compared to...? Has anyone tested the headphone output with sensitive custom in-ear monitors (like my Ultimate Ears Reference Monitors)? I'm looking to buy a high quality desktop dac/headamp to replace my home 2-channel system. Thanks!