The short version
- Of the 50 bestselling soundbars on Amazon UK on 15 September 2026, 46 print a wattage in the specification. Every one of those is speaker output. None of the 50 says how much power the bar draws from the wall, in use or on standby.
- Eleven of the 50 put Dolby Atmos in the title. Six of those list a height channel in Amazon’s channel field. Five do not, so any height effect is processed rather than bounced off the ceiling.
- Where the maker does publish it, a soundbar costs 0.5p to 2.8p an hour to run at the October 2026 cap of 26.32p per kWh. That is £7.69 to £40.35 a year at four hours a day.
- Standby is cheap by law. GB rules cap simple standby at 0.5W and networked standby at 2W for most kit, which is at most £3.84 a year if the bar waits 20 hours a day.
Soundbar listings are full of watts. Almost none of them are the watts on your bill. The number in the title, “50W”, “380W”, “880W”, is how loud the speakers can go. What the bar pulls from the socket is on the maker’s own spec page, when it is published at all, and it is a far smaller number.
So this guide does the sum the listings skip. Where the maker publishes a power consumption figure we price it per hour and per year at the Ofgem cap that applies from 1 October 2026. Where the maker does not, we say so rather than guess.
The short answer
For a small TV on a budget, the Sony HT-SF150 at £95 draws 30W, which is 0.79p an hour, and Sony publishes every power figure. For films with sound from above, the Samsung Q600F at £215 has two up-firing drivers and costs 1.95p an hour with its subwoofer. No soundbar listing we read on Amazon UK states its power draw.
How this guide was made: desk research, not a hands-on test. We have not listened to these soundbars. Channel layouts, output wattage and features are from each seller’s Amazon UK listing, read on 15 September 2026. Power consumption is from the manufacturer’s own specification page or manual, linked below, and priced by us at 26.32p per kWh, the Ofgem cap rate from 1 October 2026. Where a maker publishes no figure we give none. Prices were read the same day and move often.
Prices and specs last checked 15 September 2026 · next check 1 October 2026 · how we picked
How they compare
| Model | Channels | Height drivers | Maker’s power figure | Per hour at 26.32p | A year at 4 hours a day | Standby | Price |
|---|---|---|---|---|---|---|---|
| Majority Bowfell | 2.0 | No | Not published (12V 1.5A adapter) | Not published | Not published | Not published | £38.99 |
| Hisense HS214 | 2.1 | No | 20W (US spec sheet) | 0.53p | £7.69 | 0.5W | £79.00 |
| Sony HT-SF150 | 2.0 | No | 30W | 0.79p | £11.53 | 0.5W, 2.0W networked | £95.00 |
| ZVOX AccuVoice AV157 | 2.0 (Amazon field) | No | Not published (24W amplifier) | Not published | Not published | Not published | £139.00 |
| Sonos Ray | 3.0 | No | 2.92W idle; in use not published | Not published | Not published | 2.92W idle | £199.00 |
| Samsung HW-Q600F | 3.1.2 | Yes, 2 up-firing | 34W bar + 40W subwoofer | 1.95p | £28.44 | 0.5W + 0.5W | £215.00 |
| Sony HT-S2000 | 3.1 | No, virtual height | 42W | 1.11p | £16.14 | 0.5W, 2.0W networked | £299.00 |
| LG S90TY | 5.1.3 | Yes, 3 up-firing | 65W bar + 40W subwoofer | 2.76p | £40.35 | 0.5W + 0.5W | £399.00 |
Cost per hour is the maker’s in-use figure for one hour at 26.32p per kWh. A year assumes four hours of viewing a day, every day. Prices from Amazon UK on 15 September 2026. The Hisense in-use figure comes from Hisense’s US specification sheet because the UK page gives only standby. The LG figures come from LG’s own product page for another region because LG’s UK page for this model was not available.
The loudness watt: what the numbers on a listing measure
We read the 50 bestselling soundbar listings on Amazon UK on 15 September 2026, including the specification fields and the brand content further down each page. 46 of the 50 print a wattage in the specification, and 17 put one in the title. In every case it is speaker output, what Amazon labels “Speaker maximum output power”. Not one of the 50 states the power the bar draws from the socket, in use or on standby. The only listing to mention standby at all, ZVOX’s, describes a timer that switches the bar off, not a wattage.
We call this the loudness watt: the only W on the page, and the wrong one for your bill. It is not a small gap. Samsung’s Q600F is listed at 380W. Samsung’s own page gives 34W for the bar and 40W for the subwoofer, 74W in all. LG’s S90TY is sold as 570W. LG publishes 65W and 40W, 105W in all. In both cases the output figure is about five times the draw.
The practical upshot is reassuring. Even the biggest bar here costs under 3p an hour. The number to worry about is the price, not the running cost.
Dolby Atmos on the box, and where the height comes from
Eleven of the 50 bestsellers carry Dolby Atmos in the title (one model, Samsung’s Q930F, appears twice). Six of the eleven list a height channel in Amazon’s channel field, the third number in a layout such as 3.1.2 or 5.1.3. Five do not: a TCL 2.0, the Sony HT-S2000 3.1, a Denon 2.1, a Samsung 5.0 and a Majority 5.1.
That is not a false claim. Dolby’s own sound bar guidance describes two routes. Bars with up-firing drivers “use the reflectivity of the ceiling” for overhead effects. Bars without them process the height audio and play it “only from listener level speakers”. Both can decode Atmos. Only the first sends sound towards your ceiling. If height is the point, look for the third number in the channel count, then check the maker’s page for the words up-firing.
What standby costs, and why the law already caps it
In Great Britain, standby power for household electronics is capped by Regulation (EC) No 1275/2008 as retained in UK law. The current limits are 0.5W for simple standby, 1W with a status display, 2W for networked standby on most equipment, and 8W for high-network-availability kit such as routers.
At 26.32p per kWh, 0.5W for 20 hours a day costs 96p a year. 2W costs £3.84. Sony publishes a 2.0W networked standby figure for both its bars here, for when Bluetooth or Wi-Fi standby is on. The Sonos Ray is different: Sonos gives 2.92W when it is “powered on and not playing music”, which is £5.61 a year over 20 idle hours a day. That is still less than a pint.
The eight soundbars worth considering
Ordered by price. Each card gives the maker’s power figure where one exists, what it costs to run, and the one thing the listing does not tell you.
Majority Bowfell
CheapestThe cheapest bar here with a big following: over 10,000 ratings on Amazon UK. It is a plain 2.0 stereo bar with Bluetooth, optical, aux and USB inputs, sold as 50W. That 50W is output. Majority’s own page and manual give only the power supply, 12V at 1.5A, which caps the draw at 18W, so an hour can cost no more than 0.47p.
The catch: Majority publishes no in-use or standby figure, so the running cost is a ceiling from the adapter rating, not a measurement. The manual says it goes to standby three hours after the TV is switched off.
2.0 channels · 50W output · 12V 1.5A supply · £38.99 on 15 September 2026
Behind this verdict: Majority’s Amazon UK listing, read 15 September 2026, for channels, output and price. Majority’s product page and user manual (January 2024) for the 12V 1.5A supply and the 180-minute auto standby. No in-use or standby wattage is published anywhere we looked.
Check price on Amazon →Hisense HS214
BestsellerNumber one in Amazon UK’s soundbar chart on the day we looked. A 2.1 bar with a built-in subwoofer, HDMI ARC and Bluetooth. Hisense’s US specification sheet gives 20W in use, which is 0.53p an hour and £7.69 a year at four hours a day, the lowest running cost of the bars that publish one.
The catch: The 20W in-use figure is from Hisense’s US sheet. Hisense’s UK page gives only standby, 0.5W, and 108W of output.
2.1 channels, built-in subwoofer · 108W output · 20W in use (US sheet) · 0.5W standby · £79.00 on 15 September 2026
Behind this verdict: Hisense’s Amazon UK listing, read 15 September 2026, for channels, output and price. Hisense UK’s product page for 0.5W standby. Hisense USA’s HS214 specification sheet for 20W in use. The 0.53p is our arithmetic. The UK page does not give an in-use figure, so we cannot confirm the UK model draws the same.
As an Amazon Associate I earn from qualifying purchases. (paid link)
Sony HT-SF150
Best budgetThe best-documented cheap bar here. Sony UK’s specification page lists 30W in use, 0.5W standby and 2.0W networked standby. That is 0.79p an hour, £11.53 a year at four hours a day, and 96p to £3.84 a year on standby. It is a two-channel bar that connects to the TV with one HDMI cable and also takes Bluetooth. Amazon’s field lists 25W of output.
The catch: There is no separate subwoofer, so do not expect deep bass. Sony lists off mode as not available, so the socket switch is the only way to zero the draw.
2.0 channels · 30W in use · 0.5W standby, 2.0W networked standby · £95.00 on 15 September 2026
Behind this verdict: Sony’s Amazon UK listing, read 15 September 2026, for channels and price. Sony UK’s HT-SF150 specifications page for every power figure. The 0.79p is our arithmetic. Sony gives no off-mode figure; its page lists off mode as not available.
Check price on Amazon →ZVOX AccuVoice AV157
Best for speechBuilt for one job: making dialogue easier to follow. ZVOX sells it on twelve levels of voice boost and its listing names the AV157. It suits anyone who turns the TV up to catch speech and then winces at the adverts. ZVOX’s page lists three full-range speakers and a 24W amplifier.
The catch: No power consumption or standby figure is published, and ZVOX’s own documents disagree on the adapter (12V on the product page, 15V on the manual diagram). The listing offers a 30-day home trial, so use it.
Three full-range speakers · 24W amplifier · Auto standby after 20 minutes without a signal · £139.00 on 15 September 2026
Behind this verdict: ZVOX’s Amazon UK listing, read 15 September 2026, for the model name, the voice boost and the auto standby. ZVOX’s AV157 product page for the speakers and amplifier. We cannot give a running cost because ZVOX does not publish a power draw.
As an Amazon Associate I earn from qualifying purchases. (paid link)
Sonos Ray
Best small smart barA compact 3.0 bar that joins a Sonos multi-room system and plays music over Wi-Fi. Sonos publishes an idle figure of 2.92W, which is £5.61 a year if it sits idle 20 hours a day, the highest idle cost among the bars that publish one.
The catch: It connects to the TV’s optical port, not HDMI, and it does not support Dolby Atmos. Sonos does not publish an in-use figure.
3.0 channels · Optical input · 2.92W idle · £199.00 on 15 September 2026
Behind this verdict: Sonos’s Amazon UK listing, read 15 September 2026, for channels and price. Sonos UK’s Ray page for the optical connection and the audio formats. Sonos’s support article on power consumption while idle for 2.92W at 230V. Sonos gives no in-use figure, so we give no cost per hour of viewing.
As an Amazon Associate I earn from qualifying purchases. (paid link)
Samsung HW-Q600F
Cheapest real AtmosThe cheapest bar in the chart with physical height drivers. Samsung’s page gives a 3.1.2 layout with nine speakers, two of them firing upwards, and a separate subwoofer. The bar draws 34W and the subwoofer 40W, so a full hour costs 1.95p and a year at four hours a day £28.44. Both units are 0.5W on standby.
The catch: Amazon lists it at 380W. That is output. The two boxes draw 74W between them, and the subwoofer needs its own socket.
3.1.2 channels, 2 up-firing drivers · 34W bar + 40W subwoofer · 0.5W standby each · £215.00 on 15 September 2026
Behind this verdict: Samsung’s Amazon UK listing, read 15 September 2026, for the layout and price. Samsung UK’s HW-Q600F page for the power figures and the up-firing drivers. The 1.95p is our arithmetic. Samsung’s UK page gives no networked standby figure; its manual may, and we did not open it.
As an Amazon Associate I earn from qualifying purchases. (paid link)
Sony HT-S2000
Best one-box AtmosA single bar with a built-in subwoofer, for rooms with no space for a second box. Sony UK lists 42W in use, 0.5W standby, and 0.5W or 2.0W networked standby depending on what is left connected. That is 1.11p an hour and £16.14 a year at four hours a day.
The catch: It decodes Dolby Atmos but has no up-firing drivers. Sony creates height with its Vertical Surround Engine, which is processing, not a speaker pointed at the ceiling.
3.1 channels, built-in subwoofer · 42W in use · 0.5W standby, up to 2.0W networked · £299.00 on 15 September 2026
Behind this verdict: Sony’s Amazon UK listing, read 15 September 2026, for the layout and price. Sony UK’s HT-S2000 specifications page and Sony’s help guide for the power figures. The 1.11p is our arithmetic. How convincing the virtual height sounds is a listening question we cannot answer from a spec sheet.
As an Amazon Associate I earn from qualifying purchases. (paid link)
LG S90TY
Most height channelsA 5.1.3 system with eleven speakers, including three up-firing drivers, one of them for the centre channel. LG gives 65W for the bar and 40W for the subwoofer. That is 2.76p an hour and £40.35 a year at four hours a day, the highest running cost here and still under 3p an hour.
The catch: Sold as 570W, it draws 105W. The power figures are from LG’s page for another region because LG’s UK page for this model was unavailable when we checked.
5.1.3 channels, 3 up-firing drivers · 65W bar + 40W subwoofer · 0.5W standby each · £399.00 on 15 September 2026
Behind this verdict: LG’s Amazon UK listing, read 15 September 2026, for the layout and price. LG’s S90TY product pages (East Africa and US) for the power figures and the up-firing drivers. The 2.76p is our arithmetic. We could not confirm the power figures on an LG UK page.
As an Amazon Associate I earn from qualifying purchases. (paid link)
How to choose one
Start with the TV’s connections. A bar on HDMI ARC or eARC usually works with the TV remote. An optical-only bar may not. Then decide whether height matters. If it does, look for a third number in the channel count and up-firing drivers on the maker’s page. Then decide on a subwoofer. A separate one gives more bass but needs space and another socket.
Ignore the big wattage in the title. It is output, and it tells you nothing about the bill. If running cost matters to you, the maker’s specification page is the only place to find it. On these eight, running cost is never the deciding factor: the gap between the cheapest and dearest to run is about £33 a year of heavy use.
If speech is the problem
If you mostly want to hear what people are saying, a dialogue-focused bar or the speech mode on a mainstream one may help more than extra channels. If speech is hard to follow in general, not only on the TV, a hearing test is worth doing before spending money on a speaker.
Plugging the soundbar into a streaming stick? Our streaming sticks guide checks which ones publish a security update date and which carry adverts on the home screen.
Common questions
How much does a soundbar cost to run?
Between 0.53p and 2.76p an hour at the October 2026 cap of 26.32p per kWh, for the soundbars in this guide whose makers publish a power figure. At four hours a day that is £7.69 to £40.35 a year. The wattage on the box is speaker output, not power draw.
Is the wattage on a soundbar how much electricity it uses?
No. On all 46 of the 50 bestselling Amazon UK soundbar listings that print a wattage, it is speaker output. Samsung’s Q600F is listed at 380W and draws 74W. LG’s S90TY is listed at 570W and draws 105W, according to the makers’ own pages.
Should I switch my soundbar off at the wall?
It saves little. GB law caps simple standby at 0.5W and networked standby at 2W for most equipment. At 26.32p per kWh that is 96p to £3.84 a year for 20 hours a day on standby.
Does a Dolby Atmos soundbar need up-firing speakers?
No. A bar can decode Atmos and create height by processing. Bars with up-firing drivers bounce sound off the ceiling instead. Of the 11 Amazon UK bestsellers with Atmos in the title, six list a height channel and five do not.
What is the cheapest soundbar with real height speakers?
In Amazon UK’s top 50 on 15 September 2026, the Samsung HW-Q600F at £215. Samsung lists a 3.1.2 layout with two up-firing drivers.
Sources
- Ofgem, Energy price cap unit rates and standing charges (electricity 26.32p per kWh, 1 October to 31 December 2026, read 15 September 2026)
- Amazon UK, Best Sellers in Soundbar Speakers (top 50 read 15 September 2026)
- Sony UK, HT-SF150 specifications (read 15 September 2026)
- Sony UK, HT-S2000 specifications (read 15 September 2026)
- Samsung UK, HW-Q600F Q-Series soundbar (read 15 September 2026)
- LG, S90TY product page (read 15 September 2026)
- Sonos UK, Sonos Ray (read 15 September 2026)
- Sonos, Sonos power consumption while idle (read 15 September 2026)
- Hisense UK, HS214 soundbar (read 15 September 2026)
- Hisense USA, HS214 specification sheet (version 20200813)
- Majority, Bowfell user manual (January 2024)
- ZVOX, AccuVoice AV157 (read 15 September 2026)
- legislation.gov.uk, Regulation (EC) No 1275/2008, Annex II (GB retained version, read 15 September 2026)
- Dolby, Dolby Atmos sound bar setup guide (December 2017)
Prices checked on Amazon UK on 15 September 2026 and change often. Look Into earns a commission on qualifying purchases made through the links above, at no extra cost to you. Nobody pays for a place in this guide.