Ligawo 6518840 HDMI Extender / Switch HDMI (Full HD) 50m black (Accessories)
I can not comment on 3D or Dolby ability to say, but for me it works FullHD including sound without interference or delay with two 20m HDMI cables (redirect = true & ref_ = oh_aui_detailpage_o06_s00) and 2m networking cables in between. Was previousl