Best Buy's buyers must have picked up a bad batch because 4 pairs from 3 different stores had the same issue. I ended up going with Sennheiser HD280's. They've got great isolation. Deep bass along with accurate highs and. un like the over priced and over hyped HD 25-1 you can wear them all night and not get a headache. The Young Guru's are ok but I don't see a reason for the $100 increase over the AiAiAi Studio it's the same equipment.