[Warsoul]

I'm seriously thinking that my Xduoo TA-22 is faulty.
The 4.4mm balanced output doesn't sound louder than the unbalanced one.
What?! Can someone explain why?
I tried running IEMS, headphones like 660s2, ecc. but switching from the 6.3mm to the 4.4mm there is maybe even less volume on the 4.4... With my Fiio Q11 I don't have this problem.

 

[dunring]

If you use a phone decibel meter app to run a test it'll be easier to tell. It should have twice as much power so on a meter you can see it it's louder at the same volume level. A test tone generator web page is the best, 400hz or so will be consistent compared to music.

 

[Warsoul]

I tried, same decibels and sometimes even lower...