KmnderJust happened to me too. Called the number on the AKG website, they told me to call AKG Pro, at 1-800-397-1881. But that number said JBL support line, and is closed today.
edit: the number on AKG Pro's website is 1-800-458-5534. Same deal with being closed on Sundays.
KmnderI also sent in a ticket with the Massdrop help desk, they quickly replied with a shipping label to return the defective ones and will send an other pair. I suggest that.