For all iPods released in 2006 and earlier, some equalizer (EQ) sound settings would distort the bass sound far too easily, even on undemanding songs. This would happen for EQ settings like R&B, Rock, Acoustic, and Bass Booster, because the equalizer amplified the digital audio level beyond the software's limit, causing distortion (clipping) on bass instruments.
What acoustic element could be distorted by different audio settings in iPods prior to 2007? Name four sound profiles that would result in bass distortion on pre-2007 iPods. What specific problem caused the issue with bass distortion? iPods released before what year had issues with distorted bass? What EQ settings were known to have issues with bass distortion?