Roku TV is a very popular device, and It is a streaming device which will allow you to see every channel through the internet and the device. Even the sound from the TV will be good to listen to Roku TV, but if you need to get the good sound then you need to buy the good Sound Bar from the shops in your country. The reason I am talking about Sound Bar instead of surround sound speaker is that soundbar is not going to bother you about many wires in your room and you will get the good sound from the single place. You will be able to get different sound bars, and if you want it then you can get the best soundbar under budgets. For example, you can get the soundbar from Samsung in this price range.