Home Dealnews Massdrop x Sennheiser HD 6XX Headphones: preorders for $200 + free shipping Dealnews Massdrop x Sennheiser HD 6XX Headphones: preorders for $200 + free shipping By ARCOM - 25 June 2018 163 0 SHARE Facebook Twitter Go to the deal page: Massdrop x Sennheiser HD 6XX Headphones: preorders for $200 + free shipping