Is a Digital Optical Cable Right for Your Soundbar? Everything You Need to Know

If you're trying to get better sound from your TV using a soundbar, one of the most common connection options is the digital optical audio cable. But what exactly does it do? Is it better than HDMI ARC? Let’s break down how optical cables work with soundbars, when to use them, and how to set them up properly.

digital optical cable for soundbar

What Is a Digital Optical Cable?

A digital optical audio cable (sometimes called a TOSLINK cable) transmits audio signals in the form of light. Unlike analog AUX cables, it delivers digital audio, meaning higher fidelity and less interference.

Most TVs and soundbars support optical audio, especially mid-range and older models that may not include HDMI ARC ports.

When to Use an Optical Cable for Your Soundbar

You should consider using an optical cable when:

• ✅ Your TV has an optical out port, but no HDMI ARC.

• ✅ Your soundbar supports optical input.

• ✅ You want a stable and high-quality digital audio connection without relying on HDMI CEC or ARC compatibility.

• ✅ You're experiencing sync or compatibility issues with HDMI ARC.

🔎 Related search terms: optical audio cable for soundbar, soundbar optical connection, cable optical digital audio

Optical Cable vs. HDMI ARC: Which Is Better?

Conclusion: For basic home setups or when HDMI ARC is not available or acting up, optical is an excellent choice. But for advanced features like Atmos or deep TV-soundbar integration, HDMI ARC/eARC is more powerful.

How to Connect a Soundbar Using an Optical Cable

1. Plug one end of the optical cable into your TV’s “Digital Optical Out” port.

2. Plug the other end into your soundbar’s “Optical In” port.

3. Change your TV audio output settings to “External Speaker” or “Optical”.

4. Select the Optical input on your soundbar (some models auto-detect).

Pro tip: Make sure to remove the small plastic protective caps on each end of the cable before connecting!

Choosing a Quality Optical Cable

While optical cables are not as picky as HDMI, a good-quality one ensures durability and a tight fit.

Look for features like:

• Durable, braided jackets

• Gold-plated connectors

• Snug-fitting ends to prevent signal drop

• Lengths from 3 ft to 10 ft or longer depending on your setup

Final Thoughts

A digital optical cable remains one of the most reliable and easy ways to connect your soundbar to your TV. It delivers clear, interference-free audio, is compatible with many devices, and is ideal for those who don’t need the extra features of HDMI ARC.