When it comes to the world of premium home audio, few names carry as much weight as Sonos. For years, they have been the gold standard for multi-room audio, offering a seamless blend of high-fidelity sound and intuitive software. One of the most interesting entries in their lineup is the Sonos One SL (2019). Often overshadowed by its “smarter” sibling, the Sonos One (Gen 2), the SL version occupies a unique niche in the market. It is designed for those who want the legendary Sonos sound quality but prefer to keep their privacy intact by opting out of built-in microphones.
In this comprehensive review, we are going to dive deep into the Sonos One SL in White. Priced at a competitive $149 and backed by thousands of glowing customer reviews, this speaker promises to deliver room-filling sound in a compact, humidity-resistant package. Whether you are looking to start your first home audio system or you are a seasoned audiophile looking to expand your current setup, this review will help you decide if the Sonos One SL is the right investment for your home.
Product Overview
The Sonos One SL is essentially the “Speechless” version of the Sonos One. Released in late 2019, it was designed to replace the aging Play:1, offering updated internals and a more modern aesthetic that matches the rest of the Sonos ecosystem. The “SL” stands for “Speechless,” indicating that this model does not have built-in microphones for voice assistants like Amazon Alexa or Google Assistant.
Physically, the speaker is a masterpiece of minimalist design. The white finish is clean and matte, allowing it to blend into bookshelves, kitchen counters, or bedside tables without drawing too much attention. Despite its small footprint—standing just over 6 inches tall—it feels incredibly substantial. It’s heavy enough to stay put even when the bass is thumping, and the build quality is exactly what you would expect from a premium brand.
Under the hood, the Sonos One SL features two Class-D digital amplifiers, one tweeter for crisp high-frequency response, and one mid-woofer to ensure the faithful playback of mid-range vocal frequencies plus deep, rich bass. It connects to your home network via Wi-Fi (or Ethernet) and supports Apple AirPlay 2, making it a dream for iPhone and iPad users. Because it is humidity-resistant, it is one of the few high-end speakers you can safely place in a bathroom to enjoy your morning playlist while you shower.
Pros of the Sonos One SL
- Exceptional Sound Quality: For a speaker of this size, the audio output is nothing short of “brilliant.” Sonos has mastered the art of digital signal processing (DSP), ensuring that even at high volumes, the sound remains clear, balanced, and free of distortion. The bass is punchy without being overwhelming, and the trebles are sharp without being piercing.
- Privacy-First Design: In an era where many people are concerned about “always-listening” devices in their homes, the One SL provides peace of mind. By removing the microphones entirely, Sonos caters to users who want high-tech audio without the privacy trade-offs associated with smart assistants.
- Seamless Integration with Apple AirPlay 2: If you are an iOS user, the One SL is incredibly convenient. You can stream audio directly from your iPhone, iPad, or Mac. This means you can play audio from YouTube, Netflix, or any other app directly to the speaker without having to use the Sonos app specifically.
- Humidity Resistance: This is a frequently overlooked feature. The One SL is engineered to withstand the moisture found in bathrooms or steamy kitchens. This versatility allows you to have a consistent audio experience throughout your entire home, including spaces where other electronics might fail.
- Expandability and Stereo Pairing: One of the best things about the Sonos ecosystem is how it grows with you. You can pair two One SLs together to create a true stereo pair with distinct left and right channels. Alternatively, you can use them as rear surround speakers for a Sonos soundbar (like the Beam or Arc) to create a cinematic home theater experience.
- The Sonos App Experience: While some users find the transition to the S2 app a bit of a learning curve, it remains one of the most robust platforms for managing music services. You can link Spotify, Apple Music, Tidal, Pandora, and hundreds of other services into a single interface, making it easy to search for songs across all platforms at once.
- Trueplay Tuning: If you have an iOS device, you can use the Trueplay feature to tune the speaker to the specific acoustics of your room. The app uses your phone’s microphone to analyze how sound reflects off walls and furniture, then adjusts the speaker’s EQ for the best possible performance in that specific spot.
Cons of the Sonos One SL
- No Bluetooth Connectivity: This is the most common complaint with Sonos speakers. The One SL relies entirely on Wi-Fi. While this results in higher audio quality and prevents your music from being interrupted by phone calls, it means you cannot take the speaker to a park or use it in a location without a stable Wi-Fi network.
- Lack of Voice Control: While this is a “pro” for privacy-conscious users, it is a “con” for those who enjoy the convenience of asking Alexa to “play jazz” or “set a timer.” If you want voice control, you have to buy the standard Sonos One or control the SL via another smart device (like an Echo Dot or your phone).
- Requires a Power Outlet: Despite its compact size, the One SL is not a portable speaker. It does not have a battery and must be plugged into a wall outlet at all times. This limits your placement options to areas near a power source.
- Price Premium: At $149, it is significantly more expensive than many competitors like the Amazon Echo or Google Nest Audio. You are paying for the sound quality and the ecosystem, but for a casual listener, the price might feel a bit steep for a single small speaker.
- App Dependency for Setup: You cannot simply plug the speaker in and start playing. You must download the Sonos app and go through a guided setup process. For those who prefer “plug-and-play” simplicity, this added step can be slightly frustrating.
Customer Reviews Analysis
With over 5,800 reviews, the Sonos One SL maintains an incredibly high rating, which speaks volumes about its reliability and performance. When looking at the feedback from thousands of verified purchasers, several themes emerge that help paint a clearer picture of the user experience.
The “Wow” Factor of Sound: A vast majority of reviewers express surprise at how loud and clear this speaker can get. Many users mention that they replaced larger, older wired speakers with a pair of One SLs and found the sound quality to be superior. The clarity of vocals is a recurring point of praise, making it a favorite for podcast listeners and fans of vocal-heavy genres like jazz and folk.
The Setup Experience: While most users find the setup through the Sonos app to be straightforward, there is a minority of customers who have struggled with connectivity issues during the initial pairing. This is often linked to home network configurations (such as mesh Wi-Fi systems). However, once the speaker is connected, the general consensus is that the connection remains rock-solid.
Reliability in the Ecosystem: Long-time Sonos users frequently comment on how well the One SL integrates with their existing gear. Reviewers who purchased these as rear surrounds for their Sonos Beam or Playbar often describe the experience as “transformative” for their movie-watching. The synchronization between speakers in different rooms is frequently cited as “flawless,” with zero lag or echo between rooms.
The “Missing Mic” Sentiment: Interestingly, many reviewers specifically sought out the One SL because they did not want a microphone in their bedroom or bathroom. For these customers, the One SL isn’t just a cheaper version of the One; it’s a better version because it respects their privacy preferences.
Who Should Buy This Product?
The Sonos One SL is a specialized piece of equipment that fits perfectly for certain types of users. You should consider buying this speaker if:
1. You are a Privacy-Conscious Music Lover: If you love the idea of a high-tech, app-controlled home but hate the idea of smart assistants listening to your conversations, this is the perfect compromise. You get the modern convenience without the privacy risks.
2. You are an Apple User: With AirPlay 2 support, the One SL becomes an extension of your iPhone. It is incredibly easy to bounce audio from your phone to the speaker, and you can even ask Siri on your phone to play music on the Sonos speaker.
3. You Want to Build a Home Theater: If you already own a Sonos soundbar, adding two One SLs as rear surrounds is one of the most cost-effective ways to get a high-end 5.1 surround sound experience without running wires across your living room floor.
4. You Need a Bathroom or Kitchen Speaker: Thanks to its humidity resistance, this is one of the best options for “wet” areas of the home. It’s a significant upgrade over the cheap, battery-powered Bluetooth speakers often used in these spaces.
5. You Already Own Other Sonos Gear: If you are already in the Sonos ecosystem, the One SL is a no-brainer. It provides the same signature sound and app control at a slightly lower price point than the voice-enabled models.
Final Verdict
The Sonos One SL (2019) in White remains one of the most compelling small speakers on the market today. While it may be a few years old, its hardware is still top-tier, and Sonos’s commitment to software updates ensures that it remains a modern, capable device. It strikes a rare balance between high-end audio performance and sleek, unobtrusive design.
At $149, it represents a significant investment, but it is one that pays off in daily enjoyment. The sound is rich, the build quality is tank-like, and the ability to expand into a multi-room or home theater system gives it a longevity that cheaper speakers simply cannot match. The lack of Bluetooth and the requirement for a constant power source are minor trade-offs for the stability and fidelity offered by a Wi-Fi-based system.
If you value sound quality above all else and don’t need another voice assistant in your life, the Sonos One SL is an outstanding choice. It proves that you don’t need a massive cabinet to get massive sound. Whether it’s sitting on a shelf in your office or mounted on the wall of your bathroom, the One SL delivers a premium listening experience that is hard to beat in the compact speaker category.
Final Rating: 4.8 out of 5 stars. Highly recommended for those seeking premium audio without the “smart” eavesdropping.
