Since there are adjustments to make sure that certain low frequencies don't make it to speakers, is there any way to cut off certain high frequencies? My head unit is just trying way too hard to make the sound "clean", while it sounds clean it hurts my ears really bad, even at low volumes. It exaggerates certain aspects of music like anytime there's an 's' sound. It's so bad on CD's that only the radio is listenable, the ironic thing is that it's not listenable at all. Have you all heard what they're playing on the radio these days? You might remember that I was able to eliminate the engine noise, which was a triumph, but the system still sucks, bad. I just want to get it to the point of even being listenable.
P.S. I know what you're thinking, just adjust the sound settings on the head unit, but even if I adjust them to the point of where the sound is completely dull and lifeless, the high frequencies still manage to sneak through. I also don't want to spend anymore money on an outboard EQ, I'd rather stab myself repeatedly.