There are a couple ways to connect this sound bar to a TCL Roku TV. If you use the headphones cable to connect the TCL roku tv and the sound bar, you can use the Roku TV remote to control the volume and see the volume indicator on the television. If you use the optical cable then you need to use separate remotes and you wont have a volume indicator. The Roku Tv remote will not toggle the sound bar on or off though.
Works and sounds great even with the headphone cable attached.