It seems to depend on the listener. I don't hear the 5k ringing, but I do find these headphones to be very fatiguing for long listening periods. I bought them with the hopes of replacing my HD600s as my "all day" headphones at work, but I just can't take them for long, even though I love how they sound. I've tried some steep notch filters around the 5k range in hopes of eliminating the fatiguing aspect, but so far I haven't been successful, even though I've tried moving that notch center frequency all around. It's a real shame, because I love how they sound... I just can't stand them for long.