Polk Audio Signa S3 Sound Bar for TV & Wireless vs Roku Wireless Subwoofer
Updated August 2026 — Polk Audio Signa S3 Sound Bar for TV & Wireless wins on voice clarity and sound quality, Roku Wireless Subwoofer wins on ease of setup.
The Polk Audio Signa S3 offers a complete soundbar experience with advanced features, while the Roku Wireless Subwoofer serves as a supplementary option for existing setups.
Why Polk Audio Signa S3 Sound Bar for TV & Wireless is better
Complete system
The Signa S3 is a full soundbar with a wireless subwoofer.
Audio quality
Signa S3 features Dolby Digital 5.1 decoding for immersive sound.
Versatility
Signa S3 works with various TV formats and has built-in Chromecast.
Why Roku Wireless Subwoofer is better
Price
Roku subwoofer is significantly cheaper at $129.
Placement
Roku subwoofer can be placed up to 30 feet away from the TV.
Simplicity
Roku subwoofer uses existing Roku remote for control.
Overall score
Specifications
| Spec | Polk Audio Signa S3 Sound Bar for TV & Wireless | Roku Wireless Subwoofer |
|---|---|---|
| Channels | 2.1 | N/A |
| Bluetooth | Yes | No |
| Subwoofer | Wireless | Wireless |
| Setup | Easy | Easy |
| Audio Tech | Dolby Digital | N/A |
Dimension comparison
Overview
When it comes to enhancing your home audio setup, the Polk Audio Signa S3 Sound Bar and the Roku Wireless Subwoofer present two distinct approaches. The Signa S3 is a complete soundbar system with a wireless subwoofer, priced at $349.00, while the Roku Wireless Subwoofer offers a supplementary option for $129.00. The key takeaway here is that the Signa S3 delivers a full audio experience, while the Roku subwoofer is designed to enhance existing Roku sound systems.
Design and Build Quality
The Polk Audio Signa S3 is designed with a low-profile aesthetic that allows it to blend seamlessly with various TV setups, measuring just 2 inches tall. This sleek design not only helps in maintaining a clean look but also ensures that it doesn't obstruct your TV's screen or sensors. In contrast, the Roku Wireless Subwoofer, while compact, is a standalone unit that can be placed virtually anywhere in your room, up to 30 feet away from your TV. The flexibility of placement is a notable advantage of the Roku subwoofer, making it easier to find the perfect spot for optimal sound.
Audio Performance
Audio quality is where the Polk Audio Signa S3 shines, featuring 2.1 channel performance-tuned drivers that deliver immersive sound. With Dolby Digital 5.1 decoding and exclusive Voice Adjust technology, it ensures clear dialogue and rich bass, making it suitable for movie nights and sports events. The Roku Wireless Subwoofer, on the other hand, is designed to complement the onn. Roku Smart Soundbar by adding depth and richness with its peak bass output of 150 watts. However, it does require the compatible soundbar to function, limiting its use as a standalone product.
Features and Functionality
The Polk Audio Signa S3 offers a comprehensive feature set, including Bluetooth streaming and built-in Chromecast, allowing users to stream music from various apps. Additionally, it comes with HDMI ARC and optical cables for easy connectivity. The Roku Wireless Subwoofer boasts easy wireless setup, pairing seamlessly with your existing Roku devices. It also benefits from automatic software updates, ensuring optimal performance over time. While both products offer unique features, the Signa S3's extensive functionality makes it the more versatile option for audio enthusiasts.
Price Comparison
The price difference between the two products is significant, with the Polk Audio Signa S3 retailing for $349.00 and the Roku Wireless Subwoofer priced at $129.00. This makes the Roku option about 63% cheaper than the Signa S3. However, it's essential to consider what you are getting for that price. The Signa S3 provides a complete soundbar system, while the Roku subwoofer is merely an add-on. Thus, the higher price of the Signa S3 reflects its broader capabilities as a standalone audio solution.
User Experience
The Polk Audio Signa S3 is designed for quick and easy setup, allowing users to connect their TV and subwoofer with minimal effort. Users can control the system with a single remote, enhancing the overall convenience. Meanwhile, the Roku Wireless Subwoofer requires pairing with an onn. Roku Smart Soundbar, which can be a limitation for those who do not already own that soundbar. While the Roku subwoofer simplifies the process by using your existing Roku remote, users must still navigate the need for compatible equipment.
Popularity and Sales Rank
The Polk Audio Signa S3 has a sales rank of 3,818, indicating its popularity among consumers looking for a quality soundbar solution. The Roku Wireless Subwoofer, with a sales rank of 9,139, is also a sought-after product but ranks lower, likely due to its dependence on the Roku soundbar. The higher ranking of the Signa S3 suggests that it is a more popular choice for those seeking a complete audio upgrade.
Which should you buy?
Choosing between the Polk Audio Signa S3 and the Roku Wireless Subwoofer ultimately depends on your audio needs. If you’re looking for a comprehensive sound system that works seamlessly with various TV formats and includes advanced audio features, the Signa S3 is the clear winner at $349.00. However, if you already have a compatible Roku soundbar and are primarily interested in enhancing your existing setup, the Roku Wireless Subwoofer is a cost-effective option at $129.00. In summary, for a complete audio experience, go with the Signa S3; for a supplementary bass boost, choose the Roku subwoofer.

