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Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer vs TCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos

Updated July 2026 — Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer wins on power and weight, TCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos wins on height.

The Polk Audio Signa S2 excels in sound clarity and advanced features, while the TCL S45H offers great value and modern technology at a lower price.

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

Sound Clarity

Polk Audio's VoiceAdjust technology enhances dialogue clarity.

Build Quality

Polk Audio has a premium build with a wireless subwoofer.

Features

Polk Audio includes Dolby Digital decoding for immersive sound.

Why TCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos is better

Price

TCL S45H is significantly cheaper at $79.99.

Room Calibration

TCL S45H features AI Sonic Auto Room Calibration.

Popularity

TCL S45H has a better sales rank of 1824.

Overall score

Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer
85
TCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos
75

Specifications

SpecPolk Audio Signa S2 Sound Bar for Smart TV with SubwooferTCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos
Price$249.00$79.99
Audio TechVoiceAdjustDolby Atmos
ConnectivityHDMI, Optical, AUX, BluetoothHDMI eARC/ARC, Optical, Bluetooth, AUX
Setup EaseQuick SetupPlug-and-Play
Sales Rank32061824

Dimension comparison

Polk Audio Signa S2 Sound Bar for Smart TV with SubwooferTCL S45H 2.0 Sound Bar for Smart TV | Dolby Atmos

Overview of the Polk Audio Signa S2 and TCL S45H

The Polk Audio Signa S2 is priced at $249.00, while the TCL S45H is significantly more affordable at $79.99, making it about 68% cheaper. Both soundbars are designed to enhance the audio experience for smart TVs, but they cater to different needs and preferences in terms of features, technology, and sound quality.

Design and Build Quality

The Polk Audio Signa S2 features an ultra-slim design that is just over 2 inches tall, allowing it to fit neatly under most TVs without obstructing the screen or remote sensor. In contrast, the TCL S45H also boasts a low-profile design, measuring 31.89 inches wide and 2.36 inches high. While both soundbars prioritize aesthetics, the Polk Audio's design is particularly suited for tight spaces. However, the TCL's sleek, modern look ensures it doesn't overwhelm your entertainment setup, offering a refined feel.

Sound Performance

When it comes to sound performance, the Polk Audio Signa S2 stands out with its exclusive VoiceAdjust technology and Dolby Digital decoding, which are engineered to maximize audio clarity and reduce voice delays. This results in an immersive sound experience that enhances dialogue during movies and shows. The TCL S45H, on the other hand, utilizes Dolby Atmos and DTS Virtual:X technology to create an immersive soundstage, simulating height and surround effects effectively. While both soundbars deliver quality audio, the Polk Audio excels in dialogue clarity, making it a better choice for film enthusiasts.

Connectivity Options

The Polk Audio Signa S2 offers various connectivity options, including HDMI, optical input, and AUX, making it easy to connect to multiple devices. Additionally, it supports Bluetooth streaming, allowing users to wirelessly play music from smartphones and tablets. The TCL S45H also provides ample connectivity with HDMI eARC/ARC, optical, Bluetooth, and AUX. However, it goes a step further with its AI Sonic Auto Room Calibration, which adjusts audio settings based on the room layout for a more tailored listening experience. Both soundbars are versatile, but the TCL’s calibration feature adds a layer of convenience.

Price and Value

The Polk Audio Signa S2 is available for $249.00, while the TCL S45H is priced at $79.99, representing a substantial price difference of $169.01 or about 68%. Despite its higher cost, the Polk Audio offers premium features such as VoiceAdjust technology and a dedicated wireless subwoofer, which enhance its overall value, particularly for home theater setups. The TCL S45H, while budget-friendly, still provides impressive sound quality and features, making it an excellent choice for those on a tighter budget.

Popularity and Sales Rank

In terms of popularity, the Polk Audio Signa S2 has a sales rank of 3206, indicating a solid position within its category. Conversely, the TCL S45H boasts a better sales rank of 1824, suggesting that it has garnered more interest among consumers. This difference may reflect the appeal of its lower price point, as well as its modern features, attracting a broader audience seeking value without sacrificing sound quality.

User Experience and Setup

The Polk Audio Signa S2 is designed for quick and easy setup, complete with an HDMI cable and optical cables included in the package. Users can expect to have it up and running in minutes. The TCL S45H also emphasizes user-friendliness, with a simple plug-and-play setup and a full-function remote for ease of use. Both soundbars prioritize user experience, but the TCL’s inclusion of an app for AI Sonic calibration may provide a more personalized setup, enhancing long-term satisfaction.

Which should you buy?

Choosing between the Polk Audio Signa S2 and the TCL S45H ultimately depends on your specific needs. If you prioritize dialogue clarity and a richer audio experience for movies, the Polk Audio Signa S2, with its advanced audio technology, is worth the investment at $249.00. However, if you're looking for a budget-friendly option that still delivers solid performance and modern features, the TCL S45H at $79.99 is a compelling choice, especially with its immersive sound capabilities and auto room calibration.