If you don't have ARC, there's a workaround using an HDMI cable and an optical cable, but I didn't have to deal with that. I have Spectrum TV, and the Roku Streambar SE has the Spectrum TV app ...
Regardless, considering that the Premiere ships with an HDMI cable for a minuscule price, it's a quick and frugal way to modernize an entertainment setup. The Roku Ultra LT and Premiere can ...