The original xduoo XD-05 sucked as much as their feedback (none) and support (none) as well as Massdrops attention to shipping buggy products (none). See here:
https://drop.com/buy/xduoo-xd-05-dac-amp/talk/614934
I have zero reason to believe that anything has changed.
Solderboy23Aaaah, subjective opinions instead of facts. Why you think that would change anyone's mind? Put the new unit through a serious review, including measurements, then we are talking...
I also love mine and do feel the filters do work right. But what I want to know is if @Techland has measured one since launch, the bt adapter for example is still getting under the hood changes based on my above post and they never mentioned that, I only got my xd last year and perhaps they have fixed the firmware but never said anything. That being said I don't have the equipment to test, just my ears. I'm just saying let's be objective and not mean.