Sennheiser Ambeo Soundbar Max review: High-end surround sound from a stand-alone bar

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When Sennheiser first unveiled the Ambeo Soundbar in 2019, it was nothing short of revelatory, offering unmatched virtual surround sound and immersive 3D audio from a single bar. In 2022, Sennheiser refreshed the device with a few quality-of-life improvements and rebranded it as the "Ambeo Soundbar Max."

The bar itself delivers the same overall experience it did nearly five years ago, but the latest release comes with some new features, including better software, more ways to play, and a much more stable app experience.

Though there are cheaper options with similar performance from Sony, Sonos, and even Sennheiser (with its smaller Ambeo Plus), the Ambeo Max is still the best soundbar in its class for delivering a mind-blowing cinematic experience without the hassle of extra speakers, a bunch of wires, or a subwoofer. But with a kingly cost that doubles even its priciest competitors, this is not an option for budget-minded buyers.

The Ambeo Soundbar Max is a hulk, but its software offers hassle-free setup

One of the biggest issues with the Ambeo Soundbar when it first launched in 2019 was its unstable software, especially the app, which would often fail to connect or communicate properly with the bar. With the latest Ambeo OS and Sennheiser's updated Smart Control app for iOS and Android, the Ambeo Soundbar Max alleviates those issues with a simple setup.

The most difficult part of getting the Ambeo Max going is the physical labor it entails; removing the 40-pound bar from its gargantuan box is no easy task. Standing 50 inches across and over five inches tall, you won't want to even consider this bar unless you've got your TV mounted. As big and brash as it is, the bar does look good on the mantle, with a brushed aluminum topside, a stylish digital display, and sparkling Sennheiser logos.

However, accessing the HDMI eARC/ARC port for connection to your TV is a delicate chore, as is connecting outboard components to its trio of spare HDMI inputs. It's also a shame that these ports don't support 4K/120Hz for gaming at high frame rates on the PlayStation 5 or Xbox Series X. The ports do allow for 4K HDR pass-through, including Dolby Vision and HDR10+, which should suffice for all other needs. 

Also available is an RCA analog input (something we rarely find these days), a digital optical port, and even a traditional subwoofer out, letting you connect any old subwoofer to the bar — again, a real rarity in today's market.

Once you're all connected, Sennheiser's industrial-sized microphone helps calibrate the sound like clockwork, flooding the room with ambient audio that feels almost magical from the get-go. Connecting over WiFi via the Smart Control app is intuitive and speedy, as is updating the bar's software. During a week of testing, the app worked perfectly without a single flub.

The updated features and formats provide plenty of ways to connect and listen

When it was originally released, the Ambeo soundbar offered only basic audio streaming over Chromecast and Bluetooth, but the Ambeo Soundbar Max provides modern additions, including AirPlay 2, Spotify Connect, and Tidal Connect. 

These additions complement the soundbar's smorgasbord of compatible audio formats, from Dolby Atmos and DTS:X to support for DSD, FLAC, ALAC, and even Sony's 360 Reality Audio. The latter inclusion means you can stream music in surround sound from Sony over Amazon Music. 

While the bar comes with a solid remote for quick settings, Sennheiser's app makes it easy to adjust sound modes like Movie, Sports, and Neutral, and you can customize each with a multi-band EQ. You can also easily turn on or off the virtual surround feature, which toggles a dimmable Ambeo LED on the bar's right corner. This feature is on by default and sounds great with most content, but it's nice to have the option to turn it off for stereo audio.

The app also makes it easy to see exactly what you're hearing thanks to a codec dropdown. The bar's digital display flashes when it receives an Atmos or DTS signal, but the codec window lets you verify whether you're actually getting the proper signal. 

Unfortunately, you can't manually control the Ambeo Soundbar Max's individual channel levels. This isn't a huge deal, but it'd be nice to have the ability to raise the center channel to emphasize dialogue. The bar does quite well with its auto-calibration, but we always appreciate more options.

The bar delivers unparalleled virtual surround sound and mind-bending Dolby Atmos

You simply will not find a better virtual surround sound experience from a single bar than with the Ambeo Max, full stop. The only way to get more from your sound experience would be to have actual surround speakers, and even when compared to soundbars that do so, the Ambeo Max holds its own.

Alongside five individually powered tweeters, the bar sports six four-inch drivers at the front and sides, and a pair of 3.5-inch up-firing drivers. The drivers' large size gives the bar a physical advantage over the smaller speakers used in virtually every other soundbar. Sure, it's a beast on the shelf, but the extra size pays off.

Whether it be a surround sound film or a decked-out Dolby Atmos movie, the Ambeo Soundbar Max's 13 drivers fully submerge you in the action, bouncing sound off your walls and ceiling with thrilling accuracy to create up to a 5.1.4-channel experience. Bullets strafe by your head, subtle noises whisper at your ears, and every effect from spaceships to explosions is reproduced in a sphere of startling realism.

It's incredibly engaging to experience the system firing on all cylinders in the biggest action scenes from films like "Ant-Man" and "Blade Runner 2049." But one of the best things about the Ambeo experience is just how well the bar handles nuanced moments. You can almost reach out and touch the ethereal cloud of effects blooming around you, from chirping crickets to a bubbling stream.

The effect can seem so realistic that you may find yourself actually confusing the cinematic moments with real sounds around the house, like the steaming of a tea kettle or the whirring of a printer in the next room. Is it real, or is it Ambeo?

But as immersive as the Ambeo Soundbar Max is, it can't quite reach around the back of the listening position with the same clarity as true surround sound speakers. Similarly, overhead sounds aren't as effective as you'll find in soundbars with more dedicated up-firing drivers, like the Samsung HW-Q990 or JBL 1300X. 

Still, Sennheiser's Ambeo system is a marvel to behold, even as offerings like the Sony HT-A7000 get closer than ever to its virtual sorcery.

Music and TV also sound excellent

Things come back down to earth a bit when you pull away from 3D audio sources. When it comes to stereo music or even general TV fare, you can beat the Ambeo Soundbar Max's definition and instrumental spacing with a nice pair of bookshelf or powered speakers. 

Even so, the Max continues to impress in day-to-day listening thanks to excellent tuning and great balance between its multiple drivers. One of the most notable ways the soundbar's large drivers show their mettle is in their excellent mid-bass.

While the bar can't match a subwoofer in the very lowest sub-bass registers, it still gets down to 30Hz, and the ride from the treble down beats the pants off most competitors. The word that keeps coming to mind is "tight." This is rigid, firm, and impactful bass that holds the foundation for the rest of the sound with impressive control. 

Up above, you're getting crystal clear instrumental separation, smooth details, and excellent definition of timbres. Horns are satiny and sweet, synths buzz with sawtooth goodness, and vocals are expressive and dynamic. Surprisingly, music sounds great whether you're using regular stereo playback or the more expansive Ambeo virtualization.

Speaking of which, it can be fun to play around with streaming 3D music from services like Tidal and Amazon Music Unlimited. We still find a lot of these 3D mixes odd and echoey, especially remixes of classics like Earth, Wind, and Fire's "September." But there are some fun tracks to explore, including newer pop songs like Miley Cyrus' "Flowers" and classical fare like Charlie Lawson's "To Hold the Stars in the Palm of Your Hand." 

There's no way to add on surround speakers later

One of the more appealing features of newer soundbars, like Sony's HT-A7000 and the Sonos Arc, is that you can buy separate surround speakers to add later for improved performance. Sennheiser, however, offers no way to add satellite speakers, but it does provide options for a subwoofer, letting you purchase an Ambeo Sub or add your own.

If you know you want surround speakers from the jump, you'll probably be better off with a soundbar that bundles them into the package, like Samsung's HW-Q990 or the Vizio Elevate soundbar. Really, the whole point of the Ambeo Soundbar Max is that it's an all-in-one package. 

Should you buy the Sennheiser Ambeo Soundbar Max?

If you've got the money and want the best virtual surround sound possible from a single bar, the Ambeo Soundbar Max is the one to buy. There isn't a better soundbar in this space for providing clear, detailed, and explosive 3D audio from a single unit. This bar can be your entire sound system, and it's shown the ability to adapt to new formats and features to stay on top even as the market has flourished around it. 

And though still pricey, you can often find the Ambeo Soundbar Max on sale for less than $2,000. However, if that's still too expensive, we recommend the Sony HT-A7000 as a cheaper alternative. While not quite as impressive, it also offers immersive sound, great musicality, and powerful low-end punch from a single bar. It's also a lot easier to fit into most living rooms.

But from a pure performance standpoint, Sennheiser's Ambeo Soundbar Max is the king of virtual surround sound, offering every major feature, and even the ability to stream 3D music, in a premium package. If money is no object, this is a great object to get.