Some people say it sounds better than the FiiO M11 itself, Have you try?

@TooPoorForHiFi , sorry, I don't have M11 for comparison.

So you do believe that using DC01 with Hibi R3 is better than using R3 alone balanced output soundwise ??True??

@alexandros a : i'm describing what I'm hearing, comparing 2.5mm bal output of R3 vs DCO1 paired up with R3. And to my ears when it comes to sound quality, there is a noticeable improvement.

the iBasso homepage is there for the UAC app. Download and work on all Android devices !! The Play Market may find the iBasso DC01 (02) incompatible with many devices. ((But with UAC installed. works without problems.))