LG 100-Inch 2025 QNED 4K TV and S70TY vs Sonos Arc Ultra soundbar + Sub 4 subwoofer - Black
Updated August 2026 — Sonos Arc Ultra soundbar + Sub 4 subwoofer - Black leads on setup ease and audio quality.
The LG package offers a complete home theater experience with a large screen and advanced sound technology, while the Sonos setup excels in audio quality at a lower price.
Why LG 100-Inch 2025 QNED 4K TV and S70TY is better
Price
Higher overall value with a larger screen.
Integration
Designed to work seamlessly with LG QNED TV.
Features
Includes Dolby Atmos and Wow Orchestra.
Why Sonos Arc Ultra soundbar + Sub 4 subwoofer - Black is better
Price
Significantly cheaper option.
Audio Quality
Superior spatial audio experience.
Setup
Easier and more flexible installation.
Overall score
Specifications
| Spec | LG 100-Inch 2025 QNED 4K TV and S70TY | Sonos Arc Ultra soundbar + Sub 4 subwoofer - Black |
|---|---|---|
| Screen Size | 100 inches | N/A |
| Channels | 3.1.1 | N/A |
| Dolby Atmos | Yes | Yes |
| Wireless Sub | Yes | Yes |
| Voice Control | Alexa | Sonos Voice Control |
Dimension comparison
Overview of the Products
The LG 100-Inch 2025 QNED 4K TV and S70TY 3.1.1-Channel Soundbar package is priced at $3,593.98, while the Sonos Arc Ultra soundbar paired with the Sub 4 subwoofer retails for $1,998.00, making it about 44% cheaper than the LG option. Both products are designed to enhance your audio-visual experience, but they cater to different preferences and budgets. The LG package offers a large screen size and advanced technology, while the Sonos setup emphasizes immersive audio quality.
Audio Performance
The LG S70TY soundbar features Dolby Atmos and Wow Orchestra technology, promising an engaging audio experience. This soundbar is designed to nest under the LG QNED TV for optimal synergy, enhancing the sound quality of the television itself. In contrast, the Sonos Arc Ultra soundbar excels with spatial audio and upward-firing drivers, creating a multidimensional soundstage. It is particularly adept at making you feel as if you are part of the action, immersing you in every scene. The Sonos system emphasizes clean, pulse-pounding bass thanks to the Sub 4, which takes over the lowest frequencies for clearer overall sound.
Design and Aesthetics
The design of the LG soundbar is sleek and modern, featuring a crest design that not only looks good but also prevents dust accumulation. It is specifically made to complement the LG QNED TV in both size and style. On the other hand, the Sonos Arc Ultra boasts a minimalist design that fits seamlessly into any home decor. It’s important to note that while both soundbars are visually appealing, the LG package focuses on creating a cohesive look with its TV, while the Sonos setup is versatile enough to blend in with various styles.
Smart Features
The LG soundbar comes with built-in Alexa, allowing for voice control and smart home integration. This feature can enhance your experience by providing convenient access to the soundbar's functions. Conversely, the Sonos Arc Ultra takes smart features a step further with Sonos Voice Control and compatibility with Amazon Alexa, providing unmatched privacy and functionality. The Sonos app also enables streaming from various services, making it a more versatile option for music lovers and podcast enthusiasts.
Setup and Connectivity
Setting up the LG soundbar requires installation that complements the LG QNED TV, potentially involving some mounting options. However, once set up, it integrates nicely with the television. The Sonos Arc Ultra, on the other hand, is designed for easy connectivity. It connects via WiFi, allowing for flexible placement in your room without the hassle of cables. The setup process is streamlined through the Sonos app, which guides users through connecting the soundbar to their TV and syncing it with existing remotes.
Price and Value
The LG package is priced at $3,593.98, while the Sonos Arc Ultra with Sub 4 is available for $1,998.00, representing a significant price difference of about $1,595.98. Given this disparity, the Sonos option may appeal to those seeking high-quality audio without breaking the bank. Despite the higher price tag, the LG package provides a larger screen size and advanced picture technologies, which could justify the cost for some consumers.
Use Cases
The LG 100-Inch 2025 QNED 4K TV and S70TY soundbar are ideal for home theater enthusiasts who prioritize a large viewing experience coupled with powerful audio. This package is best suited for those who want a premium TV and sound system that work seamlessly together. Conversely, the Sonos Arc Ultra soundbar with the Sub 4 subwoofer is perfect for users who primarily want an impressive audio experience without the need for an accompanying TV. It excels in smaller spaces or as part of a multi-room audio system, making it more versatile for different environments.
Which should you buy?
Ultimately, the choice between the LG 100-Inch 2025 QNED 4K TV and S70TY soundbar and the Sonos Arc Ultra soundbar with Sub 4 subwoofer boils down to your specific needs and budget. If you are looking for a complete home theater system that offers both a large display and advanced sound technology, the LG package is worth the investment. However, if your primary focus is on superior audio quality and smart features at a significantly lower price, the Sonos Arc Ultra is an excellent choice.

