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LG S70TY 3.1.1-Channel QNED TV Matching Soundbar, vs Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer

Updated August 2026 — LG S70TY 3.1.1-Channel QNED TV Matching Soundbar, leads on width and weight.

The LG S70TY offers superior audio performance and features tailored for LG TVs, while the Polk Audio Signa S2 provides great value and versatility for various setups.

Why LG S70TY 3.1.1-Channel QNED TV Matching Soundbar, is better

Audio Quality

Dolby Atmos and immersive sound experience

Design

Sleek design tailored for LG QNED TVs

Features

WOW Interface for seamless control with LG TVs

Why Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer is better

Price

More budget-friendly option

Compatibility

Works with various TV brands

Setup

Quick setup with included HDMI cable

Overall score

LG S70TY 3.1.1-Channel QNED TV Matching Soundbar,
85
Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer
75

Specifications

SpecLG S70TY 3.1.1-Channel QNED TV Matching Soundbar,Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer
Channels3.1.12.1
Dolby AtmosYesNo
Wireless SubYesYes
BluetoothNoYes
VoiceAdjustNoYes

Dimension comparison

LG S70TY 3.1.1-Channel QNED TV Matching Soundbar,Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer

Introduction to the Soundbars

When considering soundbars to enhance your home entertainment experience, both the LG S70TY 3.1.1-Channel QNED TV Matching Soundbar and the Polk Audio Signa S2 Sound Bar offer distinct features that cater to different audio preferences. The LG soundbar is priced at $346.99, while the Polk Audio soundbar is more budget-friendly at $249.00, making it about 28% cheaper than its competitor. Understanding their unique functionalities will help you choose the right soundbar for your setup.

Design and Aesthetics

The LG S70TY boasts a sleek and stylish design that perfectly complements its QNED TV series, making it an ideal visual match for any LG television. Its compact dimensions allow it to fit neatly beneath a TV stand or be wall-mounted for a clean look. In contrast, the Polk Audio Signa S2 features an ultra-slim design at just over 2 inches tall, ensuring it won’t obstruct the view or remote sensor of most TVs. Both soundbars prioritize aesthetics, but the LG’s design is specifically tailored for synergy with its QNED series.

Audio Performance

In terms of audio capabilities, the LG S70TY is equipped with Dolby Atmos technology and a 3.1.1 channel setup, offering immersive spatial sound that enhances your viewing experience. It also features an up-firing center channel that focuses on dialogue clarity, making it suitable for movie lovers. On the other hand, the Polk Audio Signa S2, while offering Dolby Digital decoding, utilizes five full-range drivers to deliver rich audio with deep bass. While both soundbars provide excellent sound quality, the LG model is designed for a more immersive experience, particularly for LG TV users.

Connectivity Options

The LG S70TY allows seamless control and integration with compatible LG TVs via its WOW Interface, enabling users to manage sound settings with the TV remote. It supports wireless rear speakers, enhancing the surround sound experience without additional receivers. Conversely, the Polk Audio Signa S2 provides versatile connectivity options, including HDMI, optical input, and Bluetooth for wireless streaming. The inclusion of an HDMI cable for quick setup adds to its convenience, making it a solid choice for those who prioritize easy connectivity.

Subwoofer and Bass Response

The LG S70TY comes with a wireless subwoofer designed to deliver attention-grabbing bass, enhancing the overall audio experience. This soundbar's configuration emphasizes both dialogue clarity and thrilling sound effects, making it a robust option for immersive experiences. The Polk Audio Signa S2 also includes a wireless subwoofer that provides deep bass impact. However, the emphasis on Polk's VoiceAdjust technology ensures audio clarity, particularly for dialogues, which can be a deciding factor for users who primarily watch shows and films.

Versatility and Compatibility

While the LG S70TY is highly recommended for use with LG QNED TVs, it’s still a strong contender for any setup due to its advanced audio technologies. It offers compatibility with various LG accessories, enhancing its versatility within that ecosystem. The Polk Audio Signa S2, however, stands out for its universal compatibility with both 4K and HD TVs, making it an excellent choice for users with different brands of televisions. This broad compatibility, combined with Bluetooth streaming capabilities, positions the Polk soundbar as a versatile option for diverse home theater setups.

Price and Value Proposition

With a price tag of $346.99, the LG S70TY is positioned as a premium soundbar, reflecting its advanced features and compatibility with LG TVs. In comparison, the Polk Audio Signa S2, priced at $249.00, offers significant savings while still delivering impressive audio performance. This difference of approximately $97 highlights the value proposition of the Polk soundbar, particularly for budget-conscious consumers seeking quality sound without the premium price.

Which should you buy?

Ultimately, the choice between the LG S70TY and the Polk Audio Signa S2 boils down to your specific needs and setup. If you own an LG QNED TV and seek an immersive audio experience with advanced features, the LG soundbar is the clear choice, despite its higher price. However, if you’re looking for a versatile, budget-friendly option that delivers solid performance across various setups, the Polk Audio Signa S2 is an excellent alternative. Consider your budget, existing equipment, and audio preferences to make the best decision for your home entertainment system.