I think MQA is terribly over rated.
I have a Mytek Brooklyn which was one of the first fully MQA compatible DACs out there. I've disabled it and never looked back.
As I've written before, MQA is to my mind, about 20 years too late. 20 years ago DACs playing Redbook just did not sound very good. Now that has greatly improved to the point where the best DACs make high resolution files a lot less important to me. I spent time with an older ARC DAC 8 and the Mytek, but other DACs I've heard more casually confirm this. Something about new DACs, perhaps better and cheaper clocks, perhaps better jitter reduction, has shifted things.
With the ARC 8 I had to use high resolution files for it to sound good. The red book did not. With the Mytek, this delta in performance really disappeared.
I talked to a few audiophiles at the SF audiophile society and they basically concurred, they could not find an improvement.
And yes, I agree, the performance of the DAC in terms of it's output stage is FAR more important to me now than MQA or even the original file resolution.
Go with your ears.
Best,
E