I have e-mailed Richard, he is a nice guy.
The Mytek Brooklyn DAC, which I own, is very nice sounding, regardless of format played. I listen to everything from Netflix, Redbook CD and DSD on it.
I have done some listening with MQA vs. non, and am completely unimpressed by MQA. See the discussion on MQA in the Music section. If you go back I have a small request. See if you can get some info on any tracks that are good for A/B comparison that are FREE. I may have more time to listen later next week.
Also, please be aware that a lot of the MQA demonstration material are re-mixes, so it's good to ask what you are listening to.