See the replies to the post you quoted here:
Hi, all. I'm currently running ROON on an Intel NUC straight into an RME ADI-2 FS dac and then out via XLR to my monoblocks. I want to be able to run HDMI Out from my TV on my main system so I can take advantage of the Dolby Atmos capabilities of the TV. (I realize it's not surround on my 2.0...
audiosciencereview.com
and here:
Hi, all. I'm currently running ROON on an Intel NUC straight into an RME ADI-2 FS dac and then out via XLR to my monoblocks. I want to be able to run HDMI Out from my TV on my main system so I can take advantage of the Dolby Atmos capabilities of the TV. (I realize it's not surround on my 2.0...
audiosciencereview.com
Bottom line - it is vanishingly unlikely that what the poster is hearing is coming from the sound waves. The DAC in the ultra is audibly perfect, and there will be no benefit going to an external device due to a different DAC. You can get benefits if (for example) the external device implements better DSP/EQ - or as I posted in my other reply to you, you have audible noise, and want to use an optical connection or balanced analogue connections to eliminate it.