[M] TP-LINK AC3200 Wireless Tri-Band Gigabit Router Review
 

The AC3200 router from TP-LINK is another high-end offering which does use Tri-Band technology to run no less than three separate Wi-Fi channels at once. The second added 5GHz band makes sure that more devices can connect to the router, without a decrease in performance; also, thanks to the Smart Connect feature, the devices which do need to connect to the router will be assigned to one of the channels which has least load in order to perform balancing.

http://www.madshrimps.be/articles/article/1000878/