[Five]

I never had trouble with low-fi recordings personally... its playing "normal" recordings with the bass turned to max and the master volume turned up to 11. Then even a little bit of bass makes a crackle crackle sound after a while, then the speakers (also applies to headphones) need to be replaced.

But even then I can turn the bass & volume lower and make the crackles go away ... its the bass imo no matter if its mp3 or bootleg or Pink Floyd Dark Side Of The Moon...