A:AnswerHi Maverick! The 75RU9000 does not support the eARC feature. I suggest looking into the QLED line of TVs for eARC connectivity and improved features. ^Tim
A:AnswerHello leep,
The best method to connect your soundbar to the 75RU9000 will be via HDMI or Optical cable. Please check out HDMI cables and Optical cables at Best Buy.
https://www.bestbuy.com/site/searchpage.jsp?st=HDMI&_dyncharset=UTF-8&_dynSessConf=&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&af=true&iht=y&usc=All+Categories&ks=960&keys=keys
https://www.bestbuy.com/site/searchpage.jsp?st=optical&_dyncharset=UTF-8&_dynSessConf=&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&af=true&iht=y&usc=All+Categories&ks=960&keys=keys
^Cristian
A:AnswerHi Starova! Yes, the RU9000 features FreeSync VRR technology which reduces input lag, with less tearing and stuttering. VRR (Variable Refresh Rate) lets a gaming source deliver optimal video frame by each scene giving you a smooth visual experience. ^Tim