Choosing Between the LG S70TR and Polk Audio React: A Complete Soundbar Buyer's Guide

When you're trying to decide between the LG S70TR 5.1.1 Channel Soundbar ($399.99) and the Polk Audio React Sound Bar ($230.00), you're essentially choosing between two completely different philosophies of home audio. One delivers a full surround sound experience with all the components you need, while the other focuses on smart features and simplicity. Let me walk you through everything you need to know to make the right choice for your setup.

Understanding What Makes a Good Soundbar

The soundbar market has exploded over the past few years, and for good reason. Modern TVs, despite their incredible picture quality, often have terrible built-in speakers. They're just too thin to produce meaningful bass or create any sense of space in the audio. That's where soundbars come in – they're designed to dramatically improve your TV's audio without requiring you to run speaker wires all over your living room.

When shopping for a soundbar, you'll encounter several key terms that matter for your decision. Channels refer to how many separate audio streams the system can handle – a 5.1 system has five main speakers plus one subwoofer (that's what the ".1" means). Virtual surround uses digital processing to make a few speakers sound like many, while true surround actually places speakers around your room. Dolby Atmos adds height information to create overhead sound effects, making helicopters seem to fly above your head.

The most important considerations are how immersive you want your audio to be, how much space you have, and whether you care more about audio quality or convenience features like voice control.

Meet the Contenders

The LG S70TR launched in October 2024 as part of LG's latest soundbar lineup, representing a significant evolution in their approach to home theater audio. At $399.99, it includes everything you need for a complete 5.1.1 surround sound system: the main soundbar, a wireless subwoofer, and wireless rear speakers. The ".1.1" configuration means it has the standard 5.1 setup plus an additional height channel for Dolby Atmos effects.

What's particularly interesting about the S70TR is how LG has refined their wireless technology since their earlier soundbars. Previous generations sometimes struggled with connectivity drops between the main unit and wireless components, but the S70TR uses improved wireless protocols that maintain stable connections even in crowded WiFi environments.

The Polk Audio React, priced at $230, takes a completely different approach. Released earlier in Polk's current generation, it's essentially a smart speaker that happens to be really good at TV audio. The standout feature is built-in Amazon Alexa with far-field microphones, meaning you can control it with voice commands from across the room.

Audio Quality: Where the Real Differences Emerge

Here's where these two soundbars diverge most dramatically. The LG S70TR creates what audio engineers call a "true soundfield" – it physically places sounds around your listening area using dedicated speakers. When a car drives from left to right in a movie, you hear it move through the actual rear speakers behind your couch. The up-firing drivers in the main bar bounce sound off your ceiling to create height effects, so when that helicopter I mentioned earlier flies overhead, the audio literally comes from above.

The system's AI Sound Pro feature is genuinely clever. It analyzes incoming audio in real-time and adjusts the sound profile automatically. If you're watching the news, it recognizes the high vocal content and reduces bass while boosting mid-range frequencies to make dialogue crystal clear. Switch to an action movie, and it immediately opens up the soundstage and enhances low-frequency effects for those explosive moments.

The included subwoofer deserves special mention. Its 7-inch front-firing driver, powered by a 220-watt amplifier, produces surprisingly deep bass for a wireless unit. The front-firing design means you can place it against a wall without the boomy, muddy bass that rear-ported subs often create in tight spaces.

The Polk React takes a fundamentally different approach. Instead of multiple physical speakers, it uses sophisticated digital signal processing (DSP) to create virtual surround effects. Think of it like audio sleight-of-hand – the bar uses timing delays, phase shifts, and frequency adjustments to trick your brain into hearing sounds coming from directions where there aren't actually any speakers.

This virtual approach has both strengths and limitations. On the positive side, Polk's Voice Adjust technology genuinely improves dialogue clarity. You can fine-tune vocal levels independently from other audio elements, which is incredibly useful if you find yourself constantly reaching for the remote during quiet dialogue scenes. The processing also creates a surprisingly wide soundstage for a single bar – much wider than what the physical dimensions would suggest.

However, virtual surround simply can't match the precision and immersion of physical rear speakers. While the Polk creates a pleasant, room-filling sound, discrete effects like footsteps moving behind you or ambient sounds placing you "in" the scene just aren't possible with this approach.

Gaming Performance: A Clear Winner

If gaming is important to you, the LG S70TR is the obvious choice, and it's not even close. The soundbar supports Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) – features that reduce audio delay to under 15 milliseconds. For context, human reaction time is typically around 200-250 milliseconds, so this virtually eliminates any perceptible lag between on-screen action and audio.

The 120Hz passthrough capability means you can connect your PlayStation 5 or Xbox Series X directly to the soundbar and still get full 4K/120fps gaming with HDR. The soundbar acts as a transparent pass-through for video while processing the audio with minimal delay.

During my testing with competitive games like Call of Duty, the difference is immediately noticeable. Footsteps, gunshots, and directional audio cues arrive precisely when they should, giving you a genuine competitive advantage. The rear speakers also provide accurate positional audio – you can actually pinpoint enemy locations based on sound alone.

The Polk React, unfortunately, lacks any gaming-specific optimizations. It processes audio using standard algorithms that introduce enough delay to be problematic for competitive gaming. While it's perfectly fine for casual gaming or single-player experiences, serious gamers should look elsewhere.

Smart Features: Different Strengths

This is where the Polk Audio React really shines. The built-in Alexa implementation is genuinely impressive – four far-field microphones pick up voice commands even when music is playing at moderate volumes. You can control playback, adjust volume, switch inputs, and even manage your smart home devices without touching a remote.

The multi-room audio capabilities are particularly useful if you have other Alexa-enabled devices around your house. You can group the React with Echo speakers in other rooms to play synchronized music throughout your home, or use it as part of an announcement system.

AirPlay 2 and Chromecast support mean you can stream directly from your phone, tablet, or computer without dealing with Bluetooth pairing. The audio quality is noticeably better than Bluetooth since these protocols can handle higher-resolution audio streams.

The LG S70TR takes a different approach to smart features. While it lacks built-in voice assistants, the WOW Orchestra feature is genuinely innovative if you have a compatible LG TV. The soundbar coordinates with your TV's built-in speakers to create a unified, larger soundstage. Instead of disabling the TV speakers (as most soundbars do), it uses them as additional channels in the audio mix.

The LG Soundbar app provides detailed control over the system's 3-band equalizer, letting you adjust bass, midrange, and treble independently for both the main soundbar and rear speakers. This level of customization is rare in this price range and allows you to tune the system for your room's specific acoustics.

Setup and Daily Use

Setting up the Polk React is refreshingly simple. You essentially plug it in, connect it to your TV via HDMI ARC or optical cable, and you're done. The Alexa setup process walks you through connecting to your WiFi network and linking your Amazon account. Within 15 minutes, you're listening to improved TV audio and asking Alexa about the weather.

The LG S70TR requires more planning and effort. You need to find appropriate locations for the rear speakers – they should be positioned slightly behind your main listening area, ideally at ear level or slightly above. The wireless subwoofer gives you flexibility in placement, but you'll still want to experiment with positioning to find the spot that gives you the best bass response without overwhelming your room.

That said, LG has made significant improvements in their setup process. The soundbar automatically detects and pairs with the wireless components, and the included wall mounting hardware is actually usable (unlike some manufacturers who include flimsy brackets that you immediately replace).

In daily use, the systems feel quite different. The Polk encourages voice interaction – it's genuinely convenient to say "Alexa, pause" when someone calls rather than hunting for the remote. The LG rewards you with consistently impressive audio that makes everything from Netflix shows to YouTube videos sound significantly better than they should.

Value Proposition: Apples to Oranges

At $230, the Polk Audio React seems like the obvious value choice, but the comparison isn't quite that simple. You're getting a complete, functional soundbar with smart features that work well for most content. If you want to expand it later, Polk offers an optional subwoofer for around $200 and rear speakers for about $150, bringing the total system cost to nearly $600 – significantly more than the LG.

The LG S70TR at $399.99 includes everything upfront. When you break it down, you're paying roughly $133 per major component (soundbar, subwoofer, rear speakers), which is actually quite reasonable for the performance level. There are no hidden costs or required accessories – you get a complete surround sound system out of the box.

From a technology standpoint, the LG also represents better future-proofing. Dolby Atmos support ensures compatibility with the latest movie soundtracks, while the advanced gaming features align with current-generation console capabilities. The Polk's smart features will receive updates, but the fundamental audio processing is what it is.

Real-World Performance in Home Theaters

If you're setting up a dedicated home theater space, the LG S70TR is the clear choice. The physical rear speakers create genuine surround effects that make movie watching significantly more engaging. During action sequences, you feel surrounded by the audio rather than just having loud sound in front of you.

The Dolby Atmos implementation, while not as dramatic as a full ceiling-mounted system, adds noticeable height to the soundstage. Rain sounds like it's falling around you rather than just playing from speakers. Aircraft movements have genuine three-dimensional placement. These effects are subtle but cumulative – they add up to a more immersive experience.

For smaller spaces or secondary viewing areas, the Polk React makes more sense. It delivers clear, room-filling audio without requiring multiple speaker placements or dealing with wireless rear channel setup. The smart features also make it ideal for kitchens or bedrooms where convenience trumps ultimate audio quality.

Technical Evolution and Current Context

Both soundbars represent significant evolution from their predecessors. The LG S70TR benefits from years of refinement in wireless audio transmission – earlier LG soundbars sometimes suffered from dropouts or sync issues between components. The current generation uses improved protocols that maintain stable connections even in electromagnetically noisy environments.

Polk's integration of Alexa has also matured considerably. Early smart soundbars often felt like two separate products awkwardly combined, but the React feels like a cohesive device where the smart features genuinely enhance the audio experience rather than competing with it.

The timing of these releases is interesting too. The LG launched in late 2024 with full support for the latest gaming console features, while the Polk represents a more mature product focused on smart home integration – reflecting different priorities in product development.

Making Your Decision

Choose the LG S70TR 5.1.1 Channel Soundbar ($399.99) if you want the best possible audio experience and have the space for a proper surround setup. It's ideal for movie enthusiasts, serious gamers, or anyone who wants to create a genuine home theater experience. The included components and future-proof features make it excellent value for the performance level.

Choose the Polk Audio React Sound Bar ($230.00) if convenience and smart features are more important than ultimate audio quality. It's perfect for smaller spaces, secondary rooms, or users who prioritize voice control and smart home integration. Just be aware that expanding to true surround sound later will cost significantly more than buying the LG system upfront.

Both soundbars will dramatically improve your TV's audio compared to built-in speakers. The question is whether you want a complete home theater solution or a smart, simple upgrade that prioritizes convenience over immersion. Consider your space, usage patterns, and long-term plans – the right choice will serve you well for years to come.

LG S70TR 5.1.1 Channel Soundbar with Dolby Atmos and WOW Orchestra Soundbar Deals and Prices

Polk Audio React Sound Bar with Alexa Built-In Deals and Prices