A:Answer Thank you for your inquiry! To set up your Toshiba 50" Class C350 Series LED 4K UHD Smart Fire TV to control the volume of an external soundbar connected via the digital audio out, follow these steps. First, ensure the soundbar is properly connected to the TV's digital audio out port. Then, go to the TV's settings and turn off the TV speakers by navigating to Settings > Display & Sounds > Audio > TV Speakers, and set it to **Off**. Next, configure the soundbar in the Fire TV settings by going to Settings > Equipment Control > Manage Equipment > Add Equipment, and select Soundbar. Follow the on-screen instructions to pair the soundbar with the Fire TV remote, ensuring you have the brand and model number of the soundbar. Once paired, test the remote to ensure it adjusts the soundbar's volume. You may also fine-tune settings by going to Settings > Equipment Control > Manage Equipment > Advanced Settings. These steps should allow your Fire TV remote to control the soundbar volume, eliminating the need for multiple remotes. Keith | Toshiba Support https://www.bestbuy.com/site/toshiba-50-class-c350-series-led-4k-uhd-smart-fire-tv/6525243.p?skuId=6525243
