Blue sound Node 2i and Rotel Michi Connection

Hi,

I have a new Blue sound node 2i and Michi X3 and want to stream hifi music from Tidal.  I have the premium account  for master tracks and have connected the Blue sound with a optical cable.  Question I have is do I enable the Blue sound DAC or enable the "MQA external DAC" option in the settings menu?

I have tried both options and when I use the Blue sound DAC the Michi displays 96khz signal on the front panel, when I switch to "MQA external DAC" playing the same track I only get a 44khz signal?

What is the better quality DAC to play music from?  One would think the Michi.....?  Or is the Blue Sound doing something different?

FYI - I tried analog and the digital connection sounded better.....

Are there any 196khz tracks that I can try?  I have only seen 96khz so far from Tidal..

Thanks!