Samsung vs LG vs Sony Soundbars: Core Differences

Connection basics: HDMI, eARC, and Bluetooth

Every soundbar from these three brands includes an HDMI port, usually with eARC for carrying high-quality audio from your TV. The HDMI specification is maintained by the HDMI Forum, so any eARC-capable bar and TV can establish the same high-bandwidth connection. That means a Samsung bar works fine with an LG TV for standard audio, even if advanced proprietary features do not. If you are new to HDMI ARC and eARC, start there.

Bluetooth adds a second layer for quick music streaming from a phone. The Bluetooth Classic radio, as defined by the Bluetooth SIG, streams audio over the unlicensed ISM band, and all three brands support it. Bluetooth is convenient for casual listening, but for movies and TV you will want an HDMI connection because it carries more data. Models with Bluetooth multipoint can connect to two sources at once.

Beyond these standards, each maker adds proprietary wireless links for multiroom and smart-home integration. These links work best with the same brand’s other devices, so if you already own a smart TV or speakers from one company, staying in that family usually makes the setup smoother.

Proprietary audio features that tie to TVs

The most visible difference lies in how each brand synchronizes the soundbar with its own TVs. Samsung’s Q-Symphony lets the TV’s speakers and the soundbar output the audio mix together, which can widen the soundstage. This feature only works with a compatible Samsung TV, and it pairs well with the TV’s built-in speakers.

LG answers with Wow Orchestra, a similar concept for LG TVs. It aligns all the TV speakers with the soundbar to create a more immersive front stage. Sony, meanwhile, uses Acoustic Center Sync, which turns the TV speaker into the center channel so dialogue stays locked to the screen. All three require the matching TV brand.

If you have a TV from the same brand, these features can reduce audio sync problems and make the bar feel like a genuine part of the TV. Without the matching TV, the bar still works normally as a standalone soundbar, but you will miss the proprietary integration. For a deeper dive into TV-soundbar pairing, see this guide to brand compatibility.

Wireless and multiroom ecosystems

For multiroom music, Samsung leans on its SmartThings platform and often includes AirPlay 2 and Chromecast built-in. LG uses its own ThinQ app for multiroom and offers AirPlay 2 on many models. Sony typically embeds Google Home and Chromecast, with AirPlay 2 available on higher-end models.

If your household uses Apple devices, AirPlay 2 is the easiest path to stream from an iPhone or Mac. If you prefer the Google ecosystem, Chromecast built-in is the standard. Many soundbars support both, so check the spec sheet. You can also read our guide to AirPlay 2 vs Chromecast for a detailed comparison.

Audio processing and soundstage tricks

Each brand applies its own audio processing algorithms. Samsung uses Adaptive Sound to analyze the incoming signal and adjust the frequency response for the current scene. LG applies AI Sound Pro, which upmixes stereo content to simulate additional channels. Sony offers Vertical Surround Engine to make non-Atmos audio feel taller and more expansive.

These algorithms change how the bar expands the space, but they are not a substitute for physical height channels. If you rely on virtual surround, you may find Sony’s engine more convincing in some scenes, while Samsung and LG lean on their TV integration to improve the effect. For a better understanding of virtual vs. physical surround, see our explainer on virtual surround.

Voice assistants and smart features

Samsung soundbars often include Bixby and work with Alexa, while LG bars typically support Google Assistant and Alexa. Sony usually has built-in Google Assistant and Chromecast. The choice often comes down to your preferred assistant: Alexa users may lean Samsung or LG, while Google Assistant fans might prefer Sony.

Consider whether the bar has a built-in microphone for hands-free commands. If you already have a smart speaker, you may not need the bar to listen. But if you want voice control in the living room without an extra device, a bar with a mic is convenient. See our guide to voice assistant microphones for more.

Subwoofer and rear speaker options

All three brands offer soundbars that include a separate wireless subwoofer, and many bundles come with rear speakers for a full surround experience. The wireless subwoofer receives its audio signal through a proprietary connection, not standard Wi-Fi or Bluetooth, so it is paired with the bar out of the box. If you want to expand later, check whether the bar supports add-on rear speakers, and whether those rears are wireless or wired. For a broad overview, see our guide to soundbars with rear speakers.

The level of immersion depends on the channel configuration and the quality of the upmixing. A 5.1 system with physical rears will almost always outperform a virtual surround bar, especially for effects that pan from front to back. If you are deciding between a 3.1 and a 5.1, our article on 3.1 vs 5.1 explains the trade-offs.

Which should you choose?

The simplest path is to match the soundbar to your TV brand. Samsung owners get Q-Symphony, LG owners get Wow Orchestra, and Sony owners get Acoustic Center Sync. That makes the bar feel like part of the TV and often improves lip sync and overall immersion. For detailed model comparisons, browse our best Samsung soundbars, best LG soundbars, and best Sony soundbars guides.

If you are not tied to a TV brand, think about your wireless ecosystem. Apple users should look for AirPlay 2, and Google users should look for Chromecast built-in. Then consider sound processing preferences, and use the choices below as a starting point.

What to pick for your use

Questions

Does Samsung's Q-Symphony work with an LG TV?

No. Q-Symphony requires a compatible Samsung TV. LG and Sony have their own counterparts.

Can I use LG's Wow Orchestra with a Sony TV?

No. Wow Orchestra is exclusive to LG TVs paired with LG soundbars.

Do these soundbars support Dolby Atmos?

Most models support Dolby Atmos, but the exact channel configuration varies by model. Check the spec sheet.

Which brand is best for multiroom audio?

Samsung uses SmartThings, LG uses ThinQ, and Sony uses Google Home and Chromecast. Choose based on your existing ecosystem.

Are there any universal features that all three support?

Yes. All support HDMI eARC and Bluetooth for standard connections. The proprietary features are the differentiators.

Can I add rear speakers later to any of these soundbars?

It depends on the model. Many mid-range and high-end bars have optional rear speaker kits, while entry-level bars do not. Check the full spec sheet before buying.

Do these soundbars have a built-in subwoofer option?

Some compact models include a built-in subwoofer, but most separate subwoofers are wireless and offer stronger bass. See our guide to built-in vs separate subwoofers for more.