[numberonesuperman]

Hello All,

I own three AK380cu and one sounds a little different with better resolution. I've tried them all with my PAF11 amp and the seemingly better sounding one does not work properly with the amp in that the music sounds faint. All of them are on update 1.42. Is there anyway of finding out and would it require opening up the back case and if so is this easy to do? Thank you

 

[must1123]

I don't know way to tell about modifications done without disassembly. Normally modification done with internal wiring and connectors, which as far as I know is not bad thing. Did you check that all the settings of the devices are exactly the same?