Another one bites the dust. Crowdfunded headphone startup Ossic closes its doors after raising $3.2 million from pre-orders that will never be fulfilled. Over 22,000 customers pre-paid for the Ossic X headphone, which promised 3D audio with built-in head-tracking and custom-tailored sound. Unfortunately, this kind of crowdfunding flop is more common than many people realize. Read: Ossic X 3D Headphones DOA, Another Crowdfund Bites It