My recently acquired iRiver H340 is clipping the bass.
On the heaviest bass, I hear "bzzzt-bzzzt-bzzzt", definitely clipping.
There is nothing wrong with the music files since it does not clip on my computer nor on my audio recorder.
Highly aware of that software but I am still not sure whether it "alters" the sound "quality" of the files.
Anyway the problem is solved. The headphones (IEMs really) are quite intact. Using a higher-impedance headphone with the H340 I no longer hear bass clipping.
Which is why it is important to have a low output impedance.