This is true, the PA3x has MaXx plugin which can manipulate the overall sound, from basic settings of "Bass" High" Stereo" to the point of an multi-band EQ with adjustable Q settings with completely frequency selections.

Also, then a PA3x plays a midi file, the default is to choose GM/GS sounds. You can further enhance a midi file by selecting the better patches and save them with the midi file.

I will post some Pop style examples in a few