Upgrade my Ananda to Stealth version, but…

[somy]

The bass is indeed improved over Ananda OG, however I notice some noise when playing piano, more problematic on right side. I have tried two DACs, switch cable and play different piano albums, same result.
Should I be worried?

Video link:

 

[Dunring]

I ran into one of those last week with a different frequency channel imbalance of 4db in each ear cup. Use a phone decibel meter app and place the phone mic between them and use a web test tone generator and switch left and right as you go up the frequencies to see if they're different.
It was hard to pin down until I did that since each was off at different frequencies.