I did btw, the sound changed, but really can't tell difference between iPhone 6s' sound and the dx90's , expendeture-wise it should sound better , but it doesn't (((. Maybe firmware can save the situation? which one would you recommend? to my ears the sound won't change much. when enabling equalizer, the sound losses its panorama or something, so I didn't like it. Idlike to have a wide wide stereo, and base too, now (and before too) the bass wasn't impressive (although I am not a bass head), any thought on how reinstate good sound? thanks
Well, I don't have the DX90 MM2 anymore.
As I remember, I have tried every single firmware, official from Ibasso and Lurker ones to find the one I prefer.
My favorite was the 2.5.1 L0.
From memory I would suggest you to try 2.4.0 L1.
Btw did you get some new battery such as Jubatec ones?