Will the Topping E30 II support Tidal's FLAC streams?

You are very brave considering buying a Topping Dac. Do you know how many problems they have with poor quality control?

I think the most important aspect of a DAC is how it sounds. The overall sound quality is of the highest importance. Then it’s ok to verify it supports typical formats.

If I was in the market again, get the best sound quality possible… making sure it supports Qobuz. Qobuz sounds better by a small amount than the rest and has over half a million more high resolution albums, making it the only choice for folks interested in high quality sound. .

If you want etched details. sterile and boring sound, Topping is the way to go. I know they have mastered the 'measurements' game (looks so pretty and perfect on graphs) and are favored heavily by that 'other' site. I tried their DAC a couple of years ago and couldn't get rid of it fast enough. 

I don't know what your budget is, but if you want good sound consider Denafrips Aries or Musician R2R dacs.

Who cares if it decodes Tidal’s myriad of confusing formats?  Just switch to Qobuz where everything just works and you have tons of hi-res recordings as well.  Put Tidal in your rear-view mirror and say good riddance.