I have heard the Harmony dac several times with Holo springs 3 and Lampi Amber 4 .I can say without reservation the New Denafrips 15 punched way above its $2100:price point it was not only musical but had great dynamics and bass control
more so then the dacs heard above for less monies. ,the Lampi Amber4 was the meatiest having tubes but lacked slam and a bit of inner detail , heard with the Iris12 Ddc using I2S gave it a added bit of image depth and detail , we tried the older Hermes ddc on the harmony , Holo springs and Pontus 15 I felt naturalness was only better as-well as every aspect of the music, the new Hermes 12 is much better one guy said That has one but didnot want to take his out of his system which was not cool. I may buy one now, just make sure the pin out on the I2S - hdmi cable matches, wireworld I2S cables seem to be popular and match the pS audio protocol.