i just got skullcandy titan earbuds. i know, skullcandies... dont judge. However the left side has slightly better bass than the right. so if i listen to anything with a strong bassline, it sounds a bit lopsided. It's not my ears because i can switch the left bud into my right ear and the issue remains. The left bud also crackles when i push it into my ear and the right one doesn't. I can switch the rubber buds as well and it doesnt change so i think it has something to do with the fact that the left side crackles.