Sonos Era 100
SONOS
First Impressions: A Small Speaker With Big Intentions
Most compact smart speakers make a trade you can hear the moment you press play: shrink the cabinet, and the bass disappears with it. The Sonos Era 100 exists specifically to break that rule.
It's a speaker built for the awkward middle ground of a home — the kitchen counter that's too small for a soundbar, the bedside table that needs something better than a phone speaker, the desk that deserves proper stereo without swallowing half your workspace. What makes it worth a closer look isn't just that it's small and capable; it's that Sonos rebuilt the internals from the ground up rather than simply refreshing an old design, and that shows up in how it actually sounds and behaves day to day.
Before you add it to your trolley, here's what living with one is really like.
Design and Build: Made to Disappear Into a Room
The Era 100 is a short, slightly tapered cylinder that stands just over 18cm tall and about 12cm wide — roughly the footprint of a large mug, with enough height to feel substantial without becoming a shelf hog. That sizing is deliberate. Sonos designed this speaker to sit unobtrusively on a kitchen counter, a bookshelf, a bedside table, or a desk, and in practice it does exactly that. It's not trying to be a design centrepiece; it's trying to get out of the way while still looking considered, with a perforated grille that wraps the body and a soft-touch base that keeps it planted.
The physical controls are worth calling out because they're better thought out than they sound on paper. Instead of a scattering of small buttons, the top surface uses a touch-sensitive strip for volume and playback, which means you're not hunting for tiny raised buttons in a dim kitchen at 6am. It's a small thing, but it's the kind of detail that only shows up after weeks of actual use rather than a five-minute unboxing.
Because it's mains-powered rather than battery-operated, there's a cable to route, and the port and connector cluster sit on the back, angled downward so the speaker can sit flush against a wall without cables sticking out awkwardly. One placement note that matters more than it seems: Sonos speakers in this Era generation perform best with a little clearance around them — pushing the Era 100 flush into a corner or a fully enclosed shelf can muddy the low end, so it rewards a bit of breathing room rather than being crammed onto a crowded shelf.
Inside the Cabinet: What the Dual-Tweeter Design Actually Delivers
This is where the Era 100 separates itself from most speakers in its size class. Rather than the single tweeter and single woofer arrangement common in compact speakers — including the model this one replaces — the Era 100 uses two angled tweeters working in tandem with one larger mid-woofer. In plain terms, that dual-tweeter layout is what gives you genuine left-right stereo separation from a single unit, instead of a blob of sound with no sense of width. Play a track with instruments panned across the stereo field, and you can actually hear them positioned rather than mashed together in the centre — something a lot of compact speakers simply can't do because they only have one high-frequency driver.
The mid-woofer is the other half of the story, and it's noticeably larger than what you'd find in the model it replaces. That extra surface area is what lets the Era 100 move more air at low frequencies, translating into bass that has actual weight and texture rather than the thin, tinny low end typical of small speakers. It won't rattle a room the way a subwoofer would, but for its size, the low end is unusually confident — capable of underpinning a bassline with real presence rather than merely implying one.
The processor inside is a genuine upgrade over Sonos's older compact speakers too, and while raw processing power isn't something you can hear directly, its effect is felt in responsiveness: track changes, volume adjustments, and multi-room synchronisation all happen with less lag, and podcasts or audiobooks with dense audio processing (noise reduction, dynamic compression) play back smoothly rather than stuttering under load.
One detail worth flagging for anyone comparing spec sheets: the Era 100 ships sounding a little flat out of the box. It's engineered around Sonos's room-tuning software doing the fine-tuning, not around sounding perfect straight from the factory — more on that below.
Getting the Best Out of It: Room Tuning That Actually Matters
The single biggest lever for how good this speaker sounds in your specific room is Trueplay, Sonos's automatic tuning system, and it's not an optional gimmick — it's close to essential. Out of the box, before any tuning, the Era 100 can sound noticeably softer and less punchy than it's capable of. Run the tuning process, which uses the speaker's own built-in microphones to analyse how sound bounces around your specific room, and the difference is immediate: tighter, punchier bass and a more balanced overall mix.
What makes this generation notable is that Sonos finally opened the more capable version of this feature to Android users as well as iPhone owners, using the phone's microphone for a more precise, walk-around calibration; a simpler "Quick Tune" version, which only needs the speaker's own onboard mics, works on any phone. If you've owned an older Sonos speaker and were locked out of proper room tuning because you weren't on iOS, this is a genuine improvement, not a marketing footnote. Beyond automatic tuning, the Sonos app also gives you manual sliders for bass, treble, and loudness — useful if you want to hand-tune the sound to your own taste rather than relying entirely on the algorithm.
How You Connect: Three Ways In, Built for Flexibility
The Era 100 is designed to be the last speaker in the room that can't play what you want to play, and it manages that with three distinct connection paths.
Wi-Fi Streaming
Wi-Fi is the primary route, streaming directly from your chosen music service without needing your phone in the room, and it's fast enough to keep multiple speakers around the house in perfect sync if you build out a multi-room system over time.
Bluetooth Pairing
Bluetooth is there for quick, no-fuss pairing — hand your phone to a guest and they can play their own music without touching an app or a network password.
Wired Line-In
The third option, a wired connection via the Sonos Line-In Adapter, is the one worth understanding before you buy, because it's not included in the box. If you own a turntable or any other line-out audio source and want to run it through this speaker, you'll need to purchase that adapter separately — it's a small additional cost that isn't obvious from the headline price, but it does turn the Era 100 into a genuinely capable hub for older hi-fi gear, not just a streaming speaker.
It's also worth understanding what these connections are good for versus what they're not. Bluetooth here is a convenience feature, not the main event — it's there for casual, ad hoc listening rather than being the primary way you're meant to use the speaker, and you may find yourself pushing the volume higher than expected to get it as loud as Wi-Fi streaming. For everyday use, especially once you're invested in a Sonos system, Wi-Fi streaming through the app is where this speaker performs best.
Voice Control and Everyday Smart Features
Alexa is built directly into the Era 100, meaning you can ask it to skip tracks, check the weather, set a timer while your hands are covered in cooking oil, or control other Alexa-linked smart home devices — all without a separate Echo speaker in the mix. It's a genuine hands-free layer on top of the core music experience, and it works well for the basics most people actually use daily.
Live radio is also built in, giving you access to DAB and FM broadcasts directly through the speaker without needing to stream them over an app — useful if you're the kind of listener who prefers live news and radio stations to on-demand playlists.
Setup for all of this runs through the Sonos app, and it's genuinely one of the more painless smart speaker setup processes around: connect to Wi-Fi, let the app find the speaker, choose your streaming services, and you're generally listening to music within a few minutes rather than fighting through a lengthy configuration process.
Power, Placement, and Everyday Practicality
Because the Era 100 runs on mains power rather than a battery, "endurance" here isn't about hours per charge — it's about reliability. There's no battery to degrade over time, no need to remember to charge it before a dinner party, and no risk of it dying mid-playlist.
The trade-off is portability: this isn't a speaker you carry to the garden or take on holiday. It's a fixed point in a room, plugged in and ready whenever you are, which for most home listening — kitchens, bedrooms, living rooms — is exactly the right trade-off. If you're picturing something you'll move between rooms or take outside regularly, this isn't that product; it's built to live in one spot and sound its best there.
Who the Era 100 Is Actually For
A Strong Fit
This speaker makes the most sense for a specific kind of buyer: someone furnishing a single room — a kitchen, a home office, a bedroom — who wants noticeably better sound than a basic Bluetooth speaker or a smart display, without stepping up to a full hi-fi setup. It's also a strong pick for anyone already inside, or planning to build, a Sonos multi-room system, since two Era 100 units can be paired for true stereo separation, or used as rear surround speakers alongside a compatible Sonos soundbar for a home cinema setup. If you value having your music sound good with minimal fuss over having the loudest or most bass-heavy option on the market, this is squarely built for you.
Not the Right Match
It's a poorer fit if portability is high on your list — anyone wanting a speaker for the garden, camping, or moving room to room without a plug nearby should look at battery-powered portable speakers instead. It's also not the right choice for anyone chasing immersive, multi-directional spatial audio; that's what Sonos's own step-up model, the Era 300, is built for, with additional upward-firing drivers the Era 100 doesn't have. And if your whole household is on Google Assistant rather than Alexa, know going in that voice control here is Alexa-first, with Sonos's own voice assistant as the alternative — not Google's ecosystem.
How It Compares to the Alternatives
| Feature | Sonos Era 100 | Sonos One (predecessor) | Sonos Era 300 | Typical single-driver smart speaker |
|---|---|---|---|---|
| Stereo separation | Genuine left-right stereo from dual tweeters | Mono, single tweeter | Full spatial audio with upward-firing drivers | Mono, single driver |
| Bass response | Strong for its size, larger mid-woofer | Noticeably thinner low end | Deeper and more room-filling | Usually weak or absent |
| Wired input | Yes, via optional adapter | No line-in support | Yes, via optional adapter | Varies, often none |
| Bluetooth | Built in | Not supported | Built in | Usually the primary connection |
| Best suited to | Single-room stereo sound on a budget | Legacy Sonos owners only | Larger rooms, home cinema, immersive listening | Casual, portable listening |
The clearest comparison is with the Sonos One it effectively replaces: the jump to two tweeters and a larger woofer is a genuine generational leap in sound quality, not an incremental spec bump, and the addition of Bluetooth and a wired input closes gaps that frustrated long-time Sonos owners.
Against the pricier Era 300, the decision comes down to room size and ambition — if you want spatial, multi-directional sound for a larger living room, that's the model to consider; if you want excellent stereo sound in a smaller space without paying extra for spatial audio you may not have room to appreciate, the Era 100 is the more sensible buy. Against generic Bluetooth speakers in a similar price bracket, the Era 100's advantage is consistency and ecosystem: it's built to sound good specifically in your room via Trueplay, and it scales into a proper multi-room system as your setup grows, which most standalone Bluetooth speakers simply aren't designed to do.
Strengths and Weaknesses, Honestly
What Stands Out
The Era 100 earns its reputation through a handful of genuine strengths. The stereo imaging from the dual-tweeter layout is the standout feature — it's rare to get real left-right separation from a speaker this compact, and it noticeably changes how music feels rather than just how loud it is. The bass, while not overpowering, has real texture and doesn't collapse into a muddy hum the way many small speakers' low end does. Setup through the Sonos app is genuinely quick, and the addition of Bluetooth alongside Wi-Fi streaming makes it far more flexible for casual use than older Sonos models that were Wi-Fi only.
The Honest Downsides
The honest downsides are worth stating plainly too. Out of the box, before Trueplay tuning, the sound is flatter and less impressive than the speaker is actually capable of — which means a buyer who skips the tuning step, or doesn't realise it exists, won't get the full experience the reviews describe. The line-in adapter needed for turntables and other wired sources isn't included, so factor that into your total cost if a wired connection matters to you. Bluetooth performance, while a welcome addition, isn't quite as polished as the Wi-Fi streaming experience — it tends to play quieter at a given volume level and caps out at a lower streaming quality than some rival Bluetooth speakers. And while Alexa handles the basics well, some more advanced voice-assistant features that Amazon's own Echo speakers support aren't available here, since Sonos is licensing Alexa rather than building an Echo device.
Final Verdict
The Sonos Era 100 does what a lot of compact smart speakers claim to do and mostly don't: it makes a small footprint sound genuinely spacious, with real stereo separation and bass that has actual substance behind it. It rewards a few minutes spent on Trueplay tuning after setup, and it's flexible enough — Wi-Fi, Bluetooth, and an optional wired input — to fit almost any listening habit you already have.
Buy this if you want one excellent speaker for a single room, or if you're building toward a wider Sonos multi-room system over time; it's an easy speaker to recommend at this price point for exactly that purpose. Skip it if you need portability, want immersive spatial audio for a larger room, or you're committed to Google Assistant over Alexa — in those cases, the Era 300 or a dedicated portable Bluetooth speaker will serve you better. For everyone else furnishing a kitchen, bedroom, or home office that deserves better sound than a phone or a basic speaker can offer, the Era 100 is a genuinely confident buy.
What People Say
30 commentsGreat Sound and Easy Connectivity
Having heard the quality of the Sonos Era 100 whilst staying in an Air BnB, I pretty much knew that I had to get one and I haven't been disappointed. Whilst I already knew that the sound was excellent (bassy when needed, clear, loud if needed too) I've been surprised by how much I enjoy how easy it is to connect to, including switching between devices like a phone to a laptop. The wifi connectivity function is liberating and I've even found myself using the 'Alexa' and 'Hey Sonos' features a lot more than I anticipated. They're so convenient.
An amazing sounding speaker
An amazing sound from such a small speaker. It performs way above my expectations.
It doesn't have a battery, so I've given one star. I knew it didn't have a battery when I purchased it. I've no idea why AI thinks it does?
I love this product!
My only criticism is the Argos staff trying push their insurance. I purchased via the app and I've already declined this additional payment on the app.
Just say, I see you've declined the additional insurance. Would you like to reconsider?
Overall, a great sounding speaker
This was an upgrade from an LG XBOOM 360 XO2. Yes, it's more expensive but the sound quality is far better. I think it also looks better, although my wife disagrees. Overall, I think it's a great quality speaker. The only small issue I have is the Bluetooth connection. My TV is at the front of the room and the speaker is 20 feet away at the back. If people walk across the room, it can interfere with the signal. But not enough to cause a mogor problem.
Great speaker, so so Alexa experience
I’ve had this speaker for a month now and it sounds fantastic. It seems to be well built and sturdy, and the Bluetooth and Airplay experience is seamless. The one thing that takes the shine off is the limited Alexa functionality. You cannot have more than one user profile on it and you cannot add the speaker to a room or group in the Alexa app. This might change with software updates but if you need these features now, be aware that they aren’t there.
Lovely sound and small footprint
Beautiful sound with depth and resonance. The feature that allows you to tune the speaker to your room is good. I like that you have a choice whether to use it as a smart speaker. The Sonos app to control it with voice but that isn't sent to the cloud is great. Small physical footprint doesn't take up much sound on my table. Bluetooth works well, I used it as the speaker for a Zoom meeting and it gave clear crisp sound.
Landfill
A waste of money. Audio is constantly dropping out, voice commands are rarely recognised and the device loses the network on a regular basis. Have tried uninstalling and reinstalling all associated apps, have logged out and back in to all associated apps, have updated Sonos software, have disconnected and reconnected to network, still the problems persist. I shall not purchase another Sonos product.
Better than I expected except no google assistant
Great sound and lots features, however, the Era range no longer supports Google assistant. I decided to keep it anyway as it doesn’t have much of an impact. Although I am google house I have enabled Alexa on the Sonos speak which works fine to controls the same lights, door etc.
Disappointed
I found it hard to setup, requiring me to do a factory reset within 10 minutes because the app lost the connection. Android app is poor, hard to manage what's playing and cannot change volume using the phone volume buttons. Overpriced and not polished enough for the money
Awesome speaker, incredible sound quality
Bought this as a present for my Dad. It's so great - first time purchasing a Sonos product after all the hype, and wasn't; disappointed. Relatively easy to set up, works well across spotify, alexa, radio etc and the quality is incredible. Highly recommend!
Sound quality
The Sonos product is excellent and lives up to the brand's reputation. The speakers offer great clarity. For bass-heavy music, I recommend adding the Sonos Sub Mini. However, as a stereo pair or even a single speaker for a small room, they work very well.
Fine sound but poor Alexa support.
This is a fine sounding speaker. If you have an existing Sonos setup then it’s a good choice. It didn’t work for me as I wanted to use it as a smart (Alexa) speaker. They tell you that this is supported but I’m afraid that support is poor - very flaky.
Sonos Era 100
A relatively small speaker that certainly packs a punch and produces excellent sound quality. The only downside for me is that, although small, it is not really portable as it requires a mains electricity connection at all times
Effortless listening excellent sound quality
I had wanted to buy a better portable bluetooth/wifi speaker and came across this mains connected sonus. Atfter purchasing I wasn't disapointed pleasantly surprised that such small speaker can deliver such a high quality sound.
Superb Sound Quality
Everyone should have at least one of these. A very good price. Much cheaper than my old Bose Smart speaker. Easy to set up. Download the Sonos and Amazon Alexa apps in minutes and prepare yourself for the quality sound
Elegant and beautiful
Looks good in the room, sounds fantastic. Easy to connect directly through Spotify. Sonos app is fine too. Great for audiobooks, can hear speech well as well as loud thumping music. Great balance of everything.
Great sound and easy Setup
Easy to set up and connect to existing Sonos system or as stand alone speakers. Great flexibility - I often move mine between the kitchen and living room and reconnecting each time is automatic and quick.
Sonos Era 100
Added this Compact speaker to my Sonos collection. Rich clear sound lovely mid range and a bass that defies the size of the speaker. Worth the money and a welcome addition to my sound system. Great value
Awesome
Sounds great, voice control works a treat. Connected to Spotify easily and have generally just used that and not the Sonos app. Nice that the kids can use voice control, so have easy access to music
Sonos does it again.
Excellent improvement over the already great previous model. Only drawback is that it’s now slightly taller. USB C and Bluetooth connectivity are a fab addition
Battery rating N/A
Looks and sounds great!
Really easy to set up, looks great and the sound is really strong, set up as part of a cinema surround system plus being able to tweak the sound through the Sonos app is a bonus.
