Bang & Olufsen Beosound A9 Review: Is the Fifth-Generation Icon Worth It?

Introduction

The Bang & Olufsen Beosound A9 is now in its fifth generation, and it remains one of the most recognisable all-in-one music systems you can put in a home. The formula has barely changed since the original arrived in 2012: a large disc-shaped cabinet resting on three wooden legs in a tripod arrangement, wrapped in a cloth grille, with every part of the system built in.

That simplicity is the point. The A9 is a fully powered speaker, so there are no separate amplifiers or preamps to match and no system matching to worry about. You choose a location, plug it in, and the rest of the setup lives in the Bang & Olufsen app.

What makes the A9 unusual is not only how it sounds but how it gets used. It is a speaker that moves around the house with you, and in the right conditions it can even be taken outside. It is not an outdoor speaker, and that distinction matters, but the fact that it is easy enough to carry is a genuine part of its appeal.

Who This Product Is For

The A9 suits listeners who want one box to do the work of a small system. It is aimed at people who value a wide, room-filling presentation over pinpoint stereo imaging, and who would rather tune the sound from a phone than juggle source components and cables.

It also makes sense for households where music is a shared habit. Because the app supports multiple saved sound presets, several people can each keep their own tuning without fighting over a single setup, and favourite stations or services can be pinned for quick recall.

It is less of a fit for anyone who wants a genuine stereo image from a single unit, or who needs a speaker that can be left outdoors permanently. If either of those matters, plan for a second unit or look at a different category.

Design, Drivers, and Power

Inside the disc, the A9 packs seven drivers: an 8-inch woofer, two 3-inch mid-range drivers, two 1.5-inch full-range drivers, and two 0.75-inch tweeters. Each driver is powered by its own Class D amplifier, and together they total 1,150 watts.

The cabinet is rear ported, and the reported frequency response runs from 33 Hz to 23 kHz with a maximum SPL of 100 dB. Because everything is built in, the speaker needs nothing beyond a power socket to run.

Physically, the A9 weighs 33 lb. The rear-mounted bass port doubles as a handle, which makes moving it between rooms possible, though it is more cumbersome to carry than a compact portable speaker. The front cloth grille is available in a wide range of standard finishes, and custom options can be ordered directly from Bang & Olufsen or through a local dealer.

Connectivity and App Control

Wired connections include an Ethernet port, a line input that uses a USB-C adapter, and a standard cloth-covered power cord. Wireless options cover Wi-Fi, Bluetooth 5.3, AirPlay 2, and Chromecast.

There is native support for Spotify Connect, Tidal Connect, Deezer, Beolink multiroom, and B&O radio, all reachable through the Bang & Olufsen app or a separate remote control. The app also handles room correction and tuning: automatic room correction, manual EQ, or a combination of both, along with a set of sound presets and the option to build and save your own.

Setup is refreshingly straightforward. Pairing the app with the speaker is painless, and once you are in, you can save up to four favourite stations or services for one-tap recall. Two A9s can be paired for a more traditional stereo setup, and an A9 can also be combined with other compatible Bang & Olufsen speakers, with pairing handled entirely in the app.

On-speaker control is limited but neat. A tap on the top pauses or plays, and dragging a finger along the top of the disc adjusts volume.

Sound Quality in Real Rooms

Straight out of the box and without room correction, the A9 sounds noticeably bassy. A single tap in the app triggers automatic room correction, which takes roughly 30 seconds, and that alone resolves most of it. From there, the EQ wheel makes it easy to dial in the rest by ear.

The character is unmistakably Bang & Olufsen: clean and punchy. Bass can be as epic or as restrained as you want. Once properly balanced against the rest of the response, it stays detailed and responsive, and with corner placement it reaches near subwoofer-like extension, at the cost of a hint of detail.

The mid-range is crystal clear and tonally almost hyperreal rather than wholly organic, a trait shared with other speakers from the brand. The treble is clear without being the most extended; a more traditional speaker will give you a greater sense of air and decay, but the A9’s top end is very hard to make sound shrill or fatiguing.

Dynamically, a single A9 has real punch and fills a room with high-quality sound, even at lower volumes where many passive speakers lose their sense of drive. It will not image like a pair of traditional stereo speakers, which is simply the nature of a single-unit design.

Things to Consider Before Buying

The most important caveat is that the A9 is not an outdoor speaker. It can work on a covered patio where it is protected from the elements, but it should be brought inside in bad weather and kept out of direct sun to avoid fading the grille.

Second, a single unit cannot deliver the stereo imaging of a properly set up pair. If imaging is a priority, the cost of entry effectively doubles, or you accept the trade-off.

Third, the treble is tuned for long, fatigue-free listening rather than maximum extension. Listeners who prioritise air and decay in the top end may prefer a more traditional design.

Finally, this is a premium purchase. The A9 sits at the top of the all-in-one category, and the app is central to getting the most from it, so it rewards buyers who are comfortable tuning sound on a phone rather than at the front of a rack.

Buying Advice

Placement has a bigger effect here than on most speakers. A corner position reinforces the low end and can push the bass close to subwoofer territory, while an open position trades some of that weight for a little more detail. Either can work well, but it is worth trying both before settling.

Start with automatic room correction, then adjust with the EQ wheel and save a preset for each room you use. If you move the speaker outside or into another space, run correction again and save a separate preset, which is exactly the kind of flexibility the app is built around.

If you want stereo, two A9s is the intended route, and the same app handles pairing with other compatible Bang & Olufsen speakers for a whole-home setup. Smaller models from the brand, such as the Balance and the Level, cost notably less, share the same app, and can play in concert with an A9, which makes them a sensible way to extend a system.

There are alternatives worth auditioning. One less expensive large smart speaker is outclassed by the A9 and still runs Bluetooth 4.2 without Chromecast support. The Sonos Era 300 is a smaller, scalable option with a similar feature set, though it is not comparable sonically. On the longevity side, long-term owners of the brand describe speakers that still perform decades later, and the dealer network continues to support older units, which is worth factoring into a premium price.

Conclusion

The Beosound A9 is not the speaker for every room or every listener. It is a premium, single-box system that trades pinpoint stereo imaging for effortless room-filling sound, deep tuning flexibility, and a design that has aged remarkably well across five generations.

What sets it apart is how naturally it fits into daily life. It is easy to set up, easy to adjust, and easy enough to carry that it ends up wherever the music is wanted. If you want one beautifully made speaker that fills a large space and can be tuned to taste, the A9 is one of the strongest options in its class. If you need stereo imaging or a weatherproof speaker, look elsewhere.