Yeah a lot of producers purposely distort the lower frequency bass. This adds more higher frequencies and it allows people that don't have a subwoofer to kind of hear the bass. It just fills out the mix and gives the low end more presence so everyone can hear it.While the majority of other songs sound great on my system I have noticed that some rap songs sound like crap because of the bass. The bass is loud and sloppy, or in short, kind of distorted. An example is "Come and See Me" by PartyNextDoor and Drake. I have heard that some producers purposely distort the 808's, is that true? I can't blame this on a box as I'm still sealed.
Not to sound smug but I've been making beats for a long time so I know.
