Home Slickdeals eBay: HIFIMAN HE-400i Special Edition Over-Ear Planar Magnetic Headphones – $124.99 AC Slickdeals eBay: HIFIMAN HE-400i Special Edition Over-Ear Planar Magnetic Headphones – $124.99 AC By ARCOM - 17 July 2018 153 0 SHARE Facebook Twitter Go to the deal page: eBay: HIFIMAN HE-400i Special Edition Over-Ear Planar Magnetic Headphones – $124.99 AC