Hi,
with siemens I had both - first the proprietary formula, then nal-nl2, because the siemens technician thought that nal-nl2 might be better for music.
In case of the siemens, there was hard clipping with music, I´m sure. Couldn´t be avoided with any setting.
With phonak I don´t know, but it sounded (from the basic sound) very similar to the siemens with nal-nl2.
Note that nal-nl2 uses very much compression, more amplification of soft sounds, less amplification of louder sounds. This is perfect for my speech understanding.
For music, however, I have programs with less compression. Do you have an open fitting? What kind of music do you make? Maybe you can write me via pn, it gets very complicated here.
Regards,
Musician