Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless vs Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer
Updated August 2026 — Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless leads on sound quality and features.
The Hisense AX3120Q offers superior sound technology and connectivity options, while the Polk Audio Signa S2 provides excellent value and clarity. Choose based on your audio needs.
Why Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless is better
Advanced Sound
Features Dolby Atmos and DTS:X for immersive audio
Connectivity
Includes HDMI eARC and multiple connection options
EQ Modes
Offers seven EQ presets for tailored audio experience
Why Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer is better
Price
More budget-friendly at $249.00
Design
Ultra-slim design fits easily in tight spaces
Setup
Quick setup with included HDMI cable
Overall score
Specifications
| Spec | Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless | Polk Audio Signa S2 Sound Bar for Smart TV with Subwoofer |
|---|---|---|
| Audio Tech | Dolby Atmos, DTS:X | Dolby Digital |
| Bluetooth | 5.3 | 4.2 |
| Subwoofer | Wireless | Wireless |
| Voice Adjust | No | Yes |
| Setup Time | Minutes | Minutes |
Dimension comparison
Overview of Hisense AX3120Q and Polk Audio Signa S2
The Hisense AX3120Q is priced at $279.99 while the Polk Audio Signa S2 comes in at $249.00, making the Signa S2 about 11% cheaper. Both soundbars cater to different audio preferences and setups, appealing to those looking to enhance their home theater experience. The Hisense model boasts advanced features like Dolby Atmos and DTS:X, while the Polk Audio option focuses on clarity and convenience with its VoiceAdjust technology.
Sound Quality Comparison
When it comes to sound quality, the Hisense AX3120Q offers a more immersive experience with its 3.1.2 channel configuration, featuring five front-firing and two up-firing speakers. This setup delivers a powerful audio experience that fills the room, enhanced by Dolby Atmos and DTS:X technologies. On the other hand, the Polk Audio Signa S2, with its five full-range drivers, provides rich audio along with deep bass from its wireless subwoofer. While both soundbars provide excellent sound, the Hisense model is likely to appeal more to those seeking a cinema-like experience.
Design and Aesthetic
The Hisense AX3120Q comes in a sleek black finish, designed to blend seamlessly into modern home entertainment setups. Meanwhile, the Polk Audio Signa S2 features an ultra-slim design, standing just over 2 inches tall. This low-profile design allows it to fit comfortably in front of most TVs without obstructing the screen or remote sensor. The Signa S2's aesthetic may appeal to users with limited space, while the Hisense may suit those who prioritize a more robust sound system.
Connectivity Options
In terms of connectivity, the Hisense AX3120Q offers multiple options including HDMI eARC, AUX, Optical, and USB, along with Bluetooth 5.3 for seamless wireless streaming. This variety ensures compatibility with a range of devices and formats. The Polk Audio Signa S2 also provides versatility with HDMI and optical connections, but it lacks the advanced HDMI eARC option. For users looking for a comprehensive set of connection choices, the Hisense model takes the lead.
Setup Process
Both soundbars are designed for easy setup, but the Hisense AX3120Q offers a plug-and-play experience with multiple connection possibilities. The product description highlights its straightforward installation with various audio sources. The Polk Audio Signa S2 includes an HDMI cable for quick connection, allowing users to set it up in minutes. However, the Hisense's broader range of connection options may make it easier to integrate into more complex home theater systems.
Streaming Capabilities
Wireless streaming is a feature both soundbars boast. The Hisense AX3120Q allows users to stream music, podcasts, and more through its built-in Bluetooth 5.3 technology. The Polk Audio Signa S2 also offers Bluetooth connectivity, enabling music streaming from various apps like Pandora and Spotify. While both models provide this feature, the Hisense's newer Bluetooth standard may offer a more stable connection and improved audio quality for streaming.
Special Features
The Hisense AX3120Q includes seven EQ modes that enhance audio performance for various types of content like music, movies, and news, allowing users to tailor their listening experience. Additionally, its Dolby Atmos technology creates a more immersive sound environment. In contrast, the Polk Audio Signa S2 features exclusive VoiceAdjust technology, which enhances dialogue clarity and reduces voice delays, making it ideal for TV shows and movies where dialogue is key. These special features cater to different listening needs, making each soundbar unique in its offerings.
Which should you buy?
Ultimately, the choice between the Hisense AX3120Q and Polk Audio Signa S2 depends on individual preferences and needs. If you prioritize advanced sound technologies, immersive audio experiences, and a broader range of connectivity options, the Hisense model is worth the higher price at $279.99. However, if you are looking for a more budget-friendly option that still delivers excellent sound quality and convenient features, the Polk Audio Signa S2 at $249.00 is a solid choice, especially with its VoiceAdjust technology. Each soundbar has its strengths, making them suitable for different types of users and setups.

