Sonos ONESLUS1 Review: Privacy-Focused Multiroom Speaker with AirPlay 2
The Sonos One SL delivers impressive, room-filling sound from a compact, humidity-resistant design, perfect for building a seamless multiroom audio system without built-in voice assistants.
By Elvis Dicki
Updated October 20, 2026
The Sonos One SL (2019) is a compact wireless speaker designed for users seeking high-quality, integrated audio without the complexity of built-in voice assistants. Positioned within the Sonos ecosystem, this speaker prioritizes sound quality, privacy, and seamless integration with Apple devices via AirPlay 2. It is an ideal component for anyone building a multiroom audio system or looking to add high-fidelity sound to kitchens, bathrooms, or offices where humidity resistance is a benefit. For those who value audio performance and system expandability over smart features, the Sonos One SL presents a compelling option.
This review analyzes the specifications, design, and user feedback for the Sonos One SL to determine its strengths and ideal use cases. We will examine its audio performance, connectivity options, setup process, and how it fits into the broader Sonos wireless multiroom system. The bottom line is that the Sonos ONESLUS1 excels as a building block for a whole-home audio network, offering rich sound and flexible placement, though it requires a wired power connection and the Sonos app for full functionality.
Prime Sonos One SL White - Premium Wireless Speaker
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Sonos ONESLUS1 at a Glance
| Specification | Detail |
|---|---|
| Model Name | Sonos One SL |
| Audio Output | Stereo |
| Maximum Output Power | 25 watts |
| Speaker Size | 1 inch |
| Frequency Response | 43.6 Hz |
| Connectivity | Wi-Fi, Apple AirPlay 2 |
| Control Method | Sonos App, AirPlay 2 |
| Humidity Resistance | Water Resistant (suitable for bathroom/kitchen) |
| Dimensions (H x W x D) | 4.69″ x 6.36″ x 4.69″ |
| Power Source | Corded Electric |
Design and Build
The Sonos One SL features a minimalist, compact design that is intended to blend into any room. Its dimensions make it suitable for placement on a kitchen countertop, office bookshelf, or bedside table. The enclosure is constructed from plastic or rubber materials, contributing to its durability and modern aesthetic. A key design feature is its humidity-resistant construction, which the manufacturer states allows for safe placement in moisture-prone areas like bathrooms and kitchens. This expands its placement flexibility compared to standard speakers. The unit requires a wired power connection, which limits completely wireless placement to areas near an electrical outlet. The design notably omits a built-in microphone, a deliberate choice that appeals to users concerned with privacy in smart home devices.
Performance and Features
Audio Performance
According to the specifications and user reviews, the Sonos One SL delivers rich, room-filling sound from its compact form factor. It utilizes a stereo configuration with two speaker drivers, each measuring 1 inch, and has a maximum output power of 25 watts. The frequency response starts at 43.6 Hz, suggesting it can reproduce a reasonable amount of bass for its size. Owners frequently praise its balanced audio, clarity, and impressive volume output, noting that it can fill a room with clear sound even at moderate volume levels. A significant performance feature is the ability to pair two Sonos One SL units together in the same room to create a true stereo soundstage with left-right channel separation, enhancing detail and immersion.
Connectivity and Control
The primary connectivity method is via Wi-Fi, which enables its multiroom capabilities. Its standout feature is native support for Apple AirPlay 2, allowing users to stream audio directly from an iPhone, iPad, or Mac without needing to go through the Sonos app. This provides a seamless experience for Apple ecosystem users, who can also use Siri voice control to play music from Apple Music. For all other control and music services, the dedicated Sonos app is required. The app provides access to a wide range of streaming services and includes room tuning features to optimize sound based on the speaker’s placement. The speaker is also designed to connect wirelessly with other Sonos speakers, forming a synchronized whole-home audio system.
System Integration and Key Features
The Sonos One SL is designed as a modular component within the Sonos ecosystem. Beyond stereo pairing, a pair of these speakers can be used as rear surround sound channels with compatible Sonos soundbars like the Beam, Playbar, or Playbase to create a more immersive home theater experience. This multi-functionality adds significant value. The lack of a built-in voice assistant microphone is a defining feature, positioning it as a privacy-focused alternative to the standard Sonos One. However, it can still be integrated into voice assistant systems like Amazon Alexa if another device with a microphone, such as an Echo Dot, is present on the same network and linked to the Sonos system.
Setup, Support and Ownership
Setup is described as straightforward, particularly when using AirPlay 2 from an Apple device. The initial configuration through the Sonos app requires connecting to your home Wi-Fi network. Some users note that optimizing network performance, such as ensuring a strong router signal, can prevent issues like audio dropouts. The speaker receives software updates through the Sonos app, which can add new features and services over time. As part of the Sonos system, it is compatible with a wide range of other Sonos products for expansion. The manufacturer provides a one-year limited warranty. For those interested in building a comprehensive audio setup, exploring options for the best surround sound soundbars can provide context for how the One SL functions as a rear speaker.
What Owners Say
Owner feedback for the Sonos ONESLUS1 is overwhelmingly positive, reflected in its high average rating. The vast majority of reviews award the highest rating, with praise concentrated on its exceptional sound quality relative to its size, ease of use with Apple AirPlay 2, and reliable performance. Users specifically appreciate the privacy aspect of having no built-in microphone, the attractive design, and the effective room-tuning feature in the Sonos app. Common positive themes include the speaker’s ability to get loud without distortion and its seamless integration into existing Sonos systems. A smaller portion of feedback mentions that the Sonos app has a learning curve compared to simpler Bluetooth speaker apps, and some users initially experienced connectivity issues that were often resolved by adjusting their home network setup.
Pros and Cons
Pros
- Impressive, room-filling sound quality from a compact design
- Native Apple AirPlay 2 support for effortless streaming
- Humidity-resistant build allows for flexible placement (bathroom, kitchen)
- No built-in microphone enhances privacy
- Seamlessly integrates and pairs with other Sonos speakers for multiroom audio
- Can be used as rear surrounds for a Sonos home theater system
Cons
- No built-in voice assistant (Alexa/Google Assistant)
- Requires wired power connection, limiting placement
- Sonos app control requires some acclimation
- Full functionality depends on a stable home Wi-Fi network
- Primarily optimized for use within the Apple ecosystem via AirPlay
Who Should Buy It (and Who Should Skip It)
The Sonos One SL is an excellent choice for users invested in or planning to build a multiroom wireless audio system. It’s ideal for Apple households that will leverage AirPlay 2, and for anyone who prioritizes sound quality and privacy over having a built-in voice assistant. Its humidity resistance makes it perfect for kitchens, bathrooms, or covered outdoor areas. It’s also a smart buy for those wanting to add rear surround speakers to a Sonos soundbar setup. For more on building a complete audio-video system, our guide on the best TV soundbars for voice clarity offers complementary information.
This speaker is not the best fit for those seeking a completely portable, battery-powered Bluetooth speaker. Individuals who heavily rely on Amazon Alexa or Google Assistant for voice control and want that functionality directly from the speaker should consider the standard Sonos One model instead. Users who prefer the absolute simplest plug-and-play experience without any app setup might find the initial configuration a hurdle, though AirPlay offers a direct alternative for Apple users.
Final Verdict
The Sonos One SL stands out as a focused and high-performing component for a wireless whole-home audio system. It delivers on the core promise of Sonos—excellent, synchronized sound—while offering a privacy-conscious alternative by omitting the microphone. Its sound quality is consistently praised, and its compatibility with AirPlay 2 makes it incredibly user-friendly for iPhone and iPad owners. The ability to use it in stereo pairs or as part of a home theater setup adds significant long-term value and flexibility.
While it lacks native voice control and requires a power outlet, these are intentional trade-offs that define its use case. For the right user—someone building a multiroom system, an Apple enthusiast, or a privacy-minded audiophile—the Sonos ONESLUS1 is a compelling investment. It excels as a building block within the robust Sonos ecosystem, proving that exceptional sound and thoughtful design can coexist without always-on listening features. For those exploring other smart home integrations, our review of the best AI smart home devices provides a broader technological context.
FAQs
Does the Sonos One SL have a microphone for voice assistants?
No, the Sonos One SL does not have a built-in microphone. This is a key differentiator from the standard Sonos One model. It is designed for users who prefer not to have a voice assistant microphone always listening in their home, prioritizing privacy. You can still control it via the Sonos app, Apple AirPlay 2, or by integrating it with a separate voice assistant device like an Amazon Echo.
Can I use the Sonos One SL outdoors?
The speaker is listed as water resistant, not waterproof. The manufacturer specifically states it is humidity resistant and suitable for placement in bathrooms and kitchens. It is not designed to be exposed to direct rain, heavy moisture, or extreme outdoor conditions. For true outdoor use, a speaker with a higher waterproof rating would be more appropriate.
How do I play music on the Sonos One SL without using the Sonos app?
If you have an Apple device (iPhone, iPad, or Mac), you can use Apple AirPlay 2 to stream audio directly to the speaker from any app that supports AirPlay, such as Apple Music, Spotify, or Podcasts. This bypasses the Sonos app entirely. For non-Apple devices or for accessing music services directly, the Sonos app is required for control and playback.
Can two Sonos One SL speakers be used for stereo sound?
Yes, a primary feature of the Sonos One SL is the ability to pair two units together in the same room to create a true stereo pair with dedicated left and right channels. This is done through the Sonos app and significantly enhances sound separation and detail compared to using a single speaker. This same paired setup can also be configured to serve as rear surround speakers for a Sonos soundbar-based home theater system.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.