Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless vs Polk Audio Signa S3 Sound Bar for TV & Wireless
Updated August 2026 — Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless wins on audio quality and price, Polk Audio Signa S3 Sound Bar for TV & Wireless wins on smart features and design.
The Hisense AX3120Q offers superior audio performance and value, while the Polk Audio Signa S3 excels in smart features and design.
Why Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless is better
Audio Performance
Hisense has a more advanced 3.1.2 channel setup.
Price
Hisense is approximately 20% cheaper.
Connectivity
Hisense offers more versatile connection options.
Why Polk Audio Signa S3 Sound Bar for TV & Wireless is better
Smart Features
Polk includes built-in Chromecast and Google Assistant.
Design
Polk has a low-profile design suitable for tight spaces.
Sales Rank
Polk has a higher sales rank, indicating popularity.
Overall score
Specifications
| Spec | Hisense AX3120Q 3.1.2Ch Sound Bar with Wireless | Polk Audio Signa S3 Sound Bar for TV & Wireless |
|---|---|---|
| Channels | 3.1.2 | 2.1 |
| Subwoofer Size | 6.5 inches | 5.25 inches |
| Bluetooth Version | 5.3 | N/A |
| Chromecast | No | Yes |
| Voice Control | No | Yes |
Dimension comparison
Overview of Hisense AX3120Q and Polk Audio Signa S3
The Hisense AX3120Q is priced at $279.99, while the Polk Audio Signa S3 is more expensive at $349.00, making the Hisense about 20% cheaper. Both soundbars come with a wireless subwoofer, enhancing the audio experience for movies, music, and gaming. However, their features cater to different user preferences, such as audio technology and connectivity options. Understanding these differences can help you select the ideal soundbar for your entertainment needs.
Audio Performance
The Hisense AX3120Q boasts a 3.1.2 channel configuration, which includes five front-firing and two up-firing speakers, complemented by a powerful 6.5-inch subwoofer. This configuration allows it to deliver immersive sound, enhanced by Dolby Atmos and DTS:X technologies. In contrast, the Polk Audio Signa S3 features a simpler 2.1 channel setup, with two mid-range drivers and two tweeters, paired with a 5.25-inch subwoofer. While both soundbars promise room-filling audio, the Hisense offers a more complex sound experience, particularly for those who enjoy surround sound in movies and games.
Connectivity Options
The Hisense AX3120Q provides multiple connectivity options, including HDMI, AUX, ARC, and optical inputs, along with Bluetooth 5.3 for wireless streaming. This flexibility allows users to connect various devices easily. On the other hand, the Polk Audio Signa S3 also supports HDMI ARC, optical input, and Bluetooth, but it notably includes built-in Chromecast, enabling seamless streaming from various applications like Spotify and Google Play Music. This feature could be a deciding factor for users who prioritize smart home integration and convenience.
Design and Aesthetics
In terms of design, the Hisense AX3120Q features a sleek black finish and a robust build, which can complement modern home theater setups. The Polk Audio Signa S3, while also stylish, has a low-profile design that stands at only 2 inches tall, making it ideal for placement in confined spaces without blocking TV screens or remote sensors. This design consideration is particularly beneficial for users with limited space or those who prefer a discreet audio solution.
Ease of Setup
Both soundbars are designed for straightforward installation. The Hisense AX3120Q's connectivity options make it easy to plug and play with your existing setup, ensuring users can quickly enhance their audio experience. Similarly, the Polk Audio Signa S3 is marketed as easy to set up, with included HDMI and optical cables to facilitate connection to TVs. Users looking for a hassle-free installation will find either option appealing, though the Signa S3’s low-profile design may make it slightly easier to integrate into tight spaces.
Smart Features
The Hisense AX3120Q and Polk Audio Signa S3 both have smart capabilities, but they differ in their offerings. The Hisense includes Bluetooth 5.3 for wireless music streaming, allowing users to enjoy audio from various devices without the need for physical connections. The Polk Audio Signa S3, however, takes this a step further with built-in Chromecast and Google Assistant, providing users with voice control and smart home compatibility. If smart features are a priority, the Polk Audio model may be more appealing.
Price Comparison
The Hisense AX3120Q is priced at $279.99, making it the more economical choice compared to the Polk Audio Signa S3, which retails for $349.00. This represents a price difference of approximately $69.01, or about 20%. While price is an important factor, it is essential to consider the features and audio performance offered by each model to determine which soundbar provides better value for your specific needs.
Customer Reception
Both soundbars have earned favorable positions in the market, with the Hisense AX3120Q holding a sales rank of 4,836 and the Polk Audio Signa S3 slightly higher at 3,818. This indicates that the Polk model is somewhat more popular among consumers, which may reflect its strong feature set and brand reputation. However, the Hisense's competitive pricing and audio capabilities also suggest that it is a compelling choice for users seeking quality at a lower price point.
Which should you buy?
Choosing between the Hisense AX3120Q and the Polk Audio Signa S3 ultimately depends on your specific needs and preferences. If you prioritize an immersive audio experience with advanced surround sound capabilities and a lower price, the Hisense AX3120Q is an excellent choice. Conversely, if smart features like built-in Chromecast and a low-profile design are more important to you, the Polk Audio Signa S3 may be worth the additional investment. Consider your usage scenarios, room size, and integration needs to make the best decision for your home audio setup.

