They sound way too recessed and S words like snake sound way too sharp, my $15 headphones sound better than this piece of crap, I've burned them in for like 3 hours now but they still sound like crap, I can't return them either because of the poor build quality they're broke already :S.
Seems like you've been at this for quite some time, OP. Honestly, if you don't like a pair of headphones, return/sell them and move on. I understand you're mad if you paid good money and the SQ is garbage, but complaining about them isn't doing much good either, since not many people on these forums have the K540.
AKG has a 2 year warranty on all of their headphones. Might want to give that a shot.