I don't dispute that you may have heard differences between non-MQA and MQA versions of the same tracks/albums - I believe you may be telling the truth about that.
But, since you cannot conclusively eliminate the possibility of the mastering being different, I don't see why you are urging iBasso to implement MQA.
As far as I'm aware, at this point in time, MQA hasn't yet been conclusively proven to improve sound quality.
I read up on all the stuff today because I didn't care for much about it....really. But you know I log into tidal and I thought well lets see what the fuss is about. I don't listen to beyonce but I was like why shouldn't I try....the difference is apparent from the first few seconds. I can't really say anything. Yeah I don't believe in usb cables and snake oil 1000 dollar iem cables. I didnt' want to believe in it, but it does sound better. iBasso Dx200 has been built for streaming in mind...hence the wifi, android etc. Though tidal mqa isn't available on mobile, I'm sure it soon will be. If a device such as Onkyo DPX1 can implement it, I don't see why they wouldn't implement it in their system if possible. more coding yes, but if your player was built for streaming, why not?
I suggest anyone with a TIDAL account to try it. Yeah I understand the whole concept and it still doesn't mke sense to me, but it sounds better......i'm baffled.