Hello,
I'm a new user of the forum, but an old subscriber in to the app. Many jazz albums, especially from the 60s among other styles, with hard/full pan on some instruments are absolutely impossible to listen to on headphones without getting into a state of great confusion and mental exhaustion. As I start my journey on more sophisticated headphones, crossfeed has become my main demand for optimization in Poweramp. I can't imagine a greater need at this moment.