How to Choose an All in One Soundbar for TV: Complete Buying Guide?

A soundbar should match your TV’s available audio output first, with HDMI ARC/eARC as the preferred connection, optical as the fallback, and Bluetooth only as a last resort.

Matching the soundbar to your TV’s existing ports prevents that, and the check takes about two minutes. This guide covers the connections worth paying for, the ones that disappoint, and how to avoid buying formats your TV can’t pass through.

Why Connection Type Decides Everything

HDMI ARC/eARC is best for most buyers because it carries TV-app audio and usually lets the TV remote control volume. Optical is the fallback when ARC isn’t available, but supports fewer advanced formats. Look for a port labeled ARC or eARC; if present, an HDMI soundbar is your target. If not, look for Digital Audio Out (Optical).

• HDMI eARC — Best. Dolby Atmos and lossless audio, one-cable setup with TV-remote volume control.
• HDMI ARC — Strong. Same single-cable convenience, more limited bandwidth than eARC.
• Optical/Toslink — Reliable fallback. Stereo or compressed surround, not full Atmos.
• Bluetooth — Last resort. Model-specific, can introduce audible lag.

Per Consumer Reports, compatibility is the first thing to verify — not the flashiest spec. A soundbar advertising Dolby Atmos is wasted money if your TV only passes stereo through optical.

The Port-Matching Rule

The TV and soundbar must share the same connection method or the pairing won’t deliver audio as intended. Checking both ends before buying is the highest-value step here.

On the soundbar, you want a port labeled HDMI OUT (ARC/eARC) or TV OUT — not the soundbar’s other HDMI inputs, which are for game consoles and streaming sticks.

Sony’s guidance: run one HDMI cable from the TV’s HDMI IN (eARC/ARC) to the soundbar’s TV OUT (eARC/ARC), then switch the TV’s audio output from built-in speakers to the audio system. For optical, connect the TV’s Digital Audio Out (Optical) to the soundbar’s Optical In, then set the TV’s audio output to Optical or Digital Audio Out. You may also need HDMI-CEC on so the TV remote controls power and volume.

To skip the spec-sheet research, this roundup of tested all in one soundbar options narrows the field to models that already pass these compatibility checks.

What to Check Before You Buy

Match the soundbar to what your TV can pass through, then match channel count to your room — most buyers seeking better TV audio don’t need to overspend.

Prices and availability move constantly, so confirm the current figure at checkout. Sonos describes its smart wireless soundbars as connecting to virtually any TV and working with an existing remote — a useful benchmark, though the connection still has to physically match.

Mistakes That Cost You Money

Most soundbar disappointment traces to one of four avoidable wiring or buying errors:

1. Using an ordinary HDMI port instead of the ARC/eARC-labeled one. A standard HDMI input won’t return audio to the soundbar.
2. Plugging into the wrong soundbar HDMI port. The cable belongs in TV OUT or HDMI OUT (ARC/eARC), not a device input.
3. Treating Bluetooth as equivalent to HDMI ARC. It drops in and out and can trail the picture.
4. Buying formats your TV can’t pass through. Compatibility depends on both devices, not the better one.

Two handling notes from Sony: remove the protective caps from Toslink ends before inserting, and never force the connector. Power both devices off before reconnecting cables. If ARC, eARC, and optical all fail, verify the soundbar supports the same Bluetooth profile or Wi-Fi ecosystem your TV uses — the honest ceiling without new hardware.