Joybuy Insights

Buying a Dolby Atmos soundbar: a guide for TV, films and gaming

By Joybuy

Updated October 2026

5 Min Read

Better TV sound doesn’t have to mean a complete AV receiver and speaker system. A Dolby Atmos soundbar can combine multiple speaker channels, height effects and a subwoofer in a relatively compact system. The key is knowing how to interpret the technical specifications.

Many buyers focus only on wattage or terms such as “3D sound”. This can lead to common buying mistakes:

• Dolby Atmos on the box doesn’t guarantee a genuine sense of height. The soundbar needs the right speaker configuration, suitable content and favourable room acoustics.
• “Wireless” doesn’t mean the subwoofer doesn’t need power. A wireless subwoofer receives the audio signal without a speaker cable, but still needs to be plugged into a socket.
• A high channel count doesn’t automatically mean better connectivity. If HDMI eARC is missing or the soundbar only has an older ARC connection, certain audio formats and features may be limited.
• Room size and placement are often underestimated. A very wide soundbar won’t fit beneath every TV, while rear speakers need space and safe cable routing.

The most important technical features

1. Channel configuration and actual speakers

The 5.1.2 soundbar designation usually means five main channels, one bass channel and two height channels. The final number often refers to upward-firing speakers. A 7.1 soundbar, on the other hand, may use additional surround channels or separate rear speakers.

When choosing a Dolby Atmos soundbar, check the following:

• Does it have up-firing speakers?
• Are rear speakers included or available as an optional extra?
• Does it use actual speaker channels or virtual surround sound?
• Does the system also support DTS:X, Dolby TrueHD or Dolby Digital Plus?

Virtual sound modes can make audio feel more spacious, but their effectiveness depends on the shape of the room, your seating position and the walls. A soundbar with separate surround speakers takes up more space, but can provide clearer sound from behind you.

2. HDMI eARC, ARC and other connections

For a modern soundbar for TV, films and gaming, HDMI eARC is an important feature to look for. It can transmit compatible multi-channel and higher-resolution audio signals, and usually lets you adjust the volume with your TV remote.

Before you buy, check the connections on your TV and games console:

• HDMI eARC: ideal for current Dolby Atmos signals and convenient control
• HDMI ARC: suitable for many TV uses, but with lower bandwidth
• HDMI passthrough: useful if you want to connect source devices directly to the soundbar
• Optical input: a reliable alternative for older TVs, but with limitations for modern audio formats
• Bluetooth, Wi-Fi, AirPlay 2 or Chromecast: useful for music streaming and multi-room features

If you’re choosing a soundbar for films and gaming, also check whether its HDMI connections can pass through video signals such as 4K, HDR or high refresh rates.

3. Subwoofer, placement and power requirements

A soundbar with a subwoofer can deliver deeper bass more effectively than a compact standalone soundbar. A wireless subwoofer reduces visible audio cables, but still needs to be plugged into a socket. Place it on a stable, level surface, with a little space around it and away from walls and furniture.

Also consider:

• Soundbar dimensions in relation to your TV unit
• Soundbar height, so it doesn’t block the screen
• Wall-mounting options and any fixings included
• Adequate ventilation
• Safe cable routing, particularly in homes with children or pets
• Mains voltage, plug type and warranty terms for the German market

Automatic room calibration can make setup easier. However, it doesn’t replace sensible placement and shouldn’t be treated as a guarantee of a particular sound.

Our picks for different needs

Setup: how to avoid common problems

Where possible, connect the soundbar to the appropriate TV port using HDMI eARC. Enable HDMI audio output on your TV and select bitstream or passthrough output, if available. Streaming apps must also support Dolby Atmos; not every soundtrack uses this format.

Place a soundbar with up-firing speakers in an open space beneath the TV. Don’t put anything on top of it, as this can block the height channels. Avoid placing the subwoofer in an enclosed cabinet space. If you’re using rear speakers, follow the recommended distances and make sure the cables are routed safely.

Frequently asked questions about Dolby Atmos soundbars

Does Dolby Atmos work with every TV?

No. Check whether your TV can output Dolby Atmos and whether it has HDMI ARC or eARC. Older devices often only have an optical connection, which can’t transmit certain Dolby Atmos signal formats.

How long does a Dolby Atmos soundbar last?

Its lifespan depends on how long it’s used, ventilation, volume levels, firmware maintenance and physical wear. It isn’t possible to guarantee a specific lifespan. Keep the ventilation openings clear, use the soundbar in a dry environment and use the supplied power adapter.

Does a wireless soundbar use a lot of electricity?

The soundbar and subwoofer each have their own power consumption. For many devices, standby consumption is much lower than when they’re in use. To get an accurate idea, check the energy label and technical specifications for both components.