MQA and even hi-res are controversial subjects - if you are happy with the sound you have then that is all that needs to be said!

If you want to get as close as possible to an MQA digital signal path on the 976 then using Roon software with a supported endpoint is one way to go. I stream Tidal using Roon, the MQA tracks get the first unfold fom the Roon software before being sent to the endpoint (an Allo DigiOne Signature in my case, but many others are also supported) then into the 976 over SPDIF (coax). The Node2 is Roon ready so you are already pretty close, but you would be running it without its MQA support and instead feeding the digital output into the 976.