Which cable do you need to connect a soundbar to your TV? - Coolblue - anything for a smile
Amazon.com: UNBREAKcable Digital Optical Audio Cable Toslink Cable 6.6ft/2M - [24K Gold-Plated, Double Nylon Braided] Fiber Optic Male to Male Cord for Home Theater, Sound Bar, TV, PS4, Xbox, Playstation & More :
How HDMI ARC Works with Soundbars - The Home Theater DIY