Meet the Amped Wireless ATHENA-EX: a WiFi range extender with MU-MIMO that provides you with up to 15000 sq. ft. of coverage. It has 16 amplifiers and 4 high gain antennas to offer lag-free HD and 4K streaming. It offers WiFi speeds up to 2.4GHz 800Mbps + 5GHz 1733Mbps.
The device comes with USB 3.0 and USB 2.0 ports for file sharing. You also get 4 Gigabit ports. The ATHENA-EX can stream to multiple devices without buffering. Like what you see? You can get one of these for under $220.