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Polk Audio Signa S4 Sound Bar with Wireless Subwoofer - Dolby Atmos 3D Audio, Exclusive VoiceAdjust & BassAdjust Technology, HDMI eARC, Works with 8K, 4K & HD TVs, Bluetooth, Wireless Streaming


$549.99
Available at a lower price from other sellers that may not offer free Prime delivery.
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Purchase options and add-ons

Brand Polk Audio
Speaker maximum output power 410 Watts
Connectivity technology Bluetooth, Auxiliary, USB, HDMI
Audio output mode Stereo
Mounting type Wall Mount

About this item

  • ADVANCED ULTRA-SLIM SOUNDBAR & WIRELESS SUB - The Signa S4 with an upgraded 7-driver array and a dedicated full-range center channel delivers True 3D Surround Sound (Dolby Atmos 3.1.2 certified) and the 5.9" sub gives you a WIDE SOUND STAGE AND DEEP BASS
  • UP-FIRING SPEAKERS FOR HEIGHT ELEVATION - In addition to L/R Tweeters (0.98"), (2) Racetrack Mid Drivers (4.7" x 1.57") and a 0.98" Center, the left/right elevation speakers (2.59") utilize Atmos' height channels for an immersive 3D sound over your head
  • POLK’S EXCLUSIVE VOICEADJUST TECHNOLOGY, along with S4's center channel lets you customize voice levels, so you hear crystal clear dialogues without missing a word. For maximum impact, control the sub and the sound bar's bass using Bass Adjust Technology
  • EXCELLENT SOUND AND VALUE - At par with any mid- to high-range sound bars available in the market. At 2.36" tall, the Signa S4 fits most spaces - easily wall-mount it or place in front of your TV. It won’t block your TV’s bottom edge or IR remote sensor
  • 1-CABLE SETUP, WORKS WITH ANY TV INCLUDING THE LATEST 8K ULTRA-HD TVs - Get this system up and running in less than 5 minutes—all you have to do is unbox, connect and you are ready to listen. A great addition to your home theater!
  • WIRELESSLY STREAM MUSIC from your favorite streaming apps like Pandora, Spotify, TuneIn, and others directly from your smartphone, tablet, or other compatible devices via built-in Bluetooth technology
  • NUMEROUS CONNECTION POSSIBILITIES - Plug in any audio source via the provided inputs - (1) optical, (1) analog 3.5mm, or Bluetooth, and USB-A (for firmware updates). Enjoy uncompromised audio experience over the eight channels via the HDMI (eARC) output

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From the manufacturer

Polk Signa S4

Polk Signa S4

Polk Signa S4

Polk Signa S4

Five Decades of Engineering the Perfect Home Theater Sound

Signa S4 was designed in our Acoustic Research and Development center outside Baltimore, MD by the speaker experts at Polk. We've leveraged over 50 years of American hi-fi loudspeaker engineering so Signa S4 will deliver the thunderous, crystal clear, cinematic surround sound experience you've always dreamed of in your home - but at a value you could only imagine.

True Dolby Atmos Sound Bar System

Signa S4 is Dolby Atmos Certified to immerse you in 360 degrees of surround sound. The difference between regular surround sound and Dolby Atmos Certified sound is that it provides a true 3D sound experience by the additional playback of audio on height channels. From added ambience in music to special effects flying overhead, Signa S4 provides an incredibly realistic sound environment. And when you playback standard audio through Signa S4, it can be upmixed to create a virtual Atmos experience.

VoiceAdjust - Hear Every Word

Tired of riding the volume control to hear the dialogue during quiet scenes? Have trouble picking out voices when the bass kicks in? Polk's VoiceAdjust was designed to make sure that you hear every word. This patented technology combines with Signa S4's dedicated center channel to allow you to raise the volume of only the voices, making them clear and easy-to-understand, while leaving the rest of the soundtrack untouched.

Polk Signa S4

Polk Signa S4

Polk Signa S4

Polk Signa S4

Customizable Sound – Music, Movie, Night Modes

Late night binge-watching session? Don’t worry about waking your family or neighbors. With Night Mode, one button lowers the bass while increasing VoiceAdjust so you can hear every word, without raising the master volume. Plus, one-button, preset sound modes optimize the Signa S4 so you can have the best sonic experience for movie watching and music listening.

Wireless Subwoofer for Effortless Bass

Signa S4’s powerful wireless subwoofer provides the deep, effortless bass that Polk is famous for, at a level of loudness that’s surprising for its size. The subwoofer connects automatically on start up and can be conveniently placed nearly anywhere in the room. Put it up front or in the corner for maximum impact or place it behind the couch and feel the rumble.

Sets Up In Seconds

Set up is easy: simply connect the included HDMI or optical cable (or aux-in for older TVs) for the ultimate sound quality for any TV – even the latest 8K Ultra-HD TVs. Signa S4 is pre-programmed to work with most TV remotes, and it quickly pairs to your mobile device via Bluetooth to stream your favorite music. Lastly, Signa S4’s low-profile design won’t block your TV or your remote and can also be wall-mounted for flexible placement.

react s2 s3 s4
React Signa S2 Signa S3 Signa S4
Customer Reviews
4.1 out of 5 stars
893
4.3 out of 5 stars
22,405
4.3 out of 5 stars
22,405
4.3 out of 5 stars
22,405
Price $369.00 $349.00 $399.00 $549.99
Best For Voice Control Affordable Performance Music Listening Dolby Atmos
Channels 2 2.1 2.1 3.1.2
Surround Format DTS Digital Surround, Dolby DigitalDTS Digital Surround, Dolby Digital Dolby Digital Dolby Digital Dolby Atmos, Dolby Digital Plus, Dolby TrueHD, Dolby Digital
Smart/Music Streaming Wi-Fi, Alexa Built-in (with mics), Bluetooth Bluetooth Wi-Fi, Chromecast, Bluetooth Bluetooth
SR2 Wireless Surround Speakers Available Separately No No No
Polk VoiceAdjust Yes Yes Yes Yes
Wireless Subwoofer Included Available Separately Yes Yes Yes
Inputs HDMI ARC, Optical HDMI ARC, Optical, 3.5mm HDMI ARC, Optical, 3.5mm HDMI eARC, Optical, 3.5mm
Sound Bar Size 2.2" x 34" x 4.7" 2.1” x 35.4” x 3.2” 2.1” x 35.4” x 3.2” 2.4” x 41.2” x 3.7”
Center Channel Phantom Phantom Phantom Yes, Dedicated

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Polk Audio Signa S4 Sound Bar with Wireless Subwoofer - Dolby Atmos 3D Audio, Exclusive VoiceAdjust & BassAdjust Technology, HDMI eARC, Works with 8K, 4K & HD TVs, Bluetooth, Wireless Streaming
Polk Audio Signa S4 Sound Bar with Wireless Subwoofer - Dolby Atmos 3D Audio, Exclusive VoiceAdjust & BassAdjust Technology, HDMI eARC, Works with 8K, 4K & HD TVs, Bluetooth, Wireless Streaming
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Price$549.99-18% $399.00
Was:$486.24
-28% $502.95
Was:$699.00
-22% $299.00
Was:$382.14
-6% $169.99
Was:$179.99
-45% $498.00
List:$899.99
Delivery
Get it by Friday, Jul 12
Get it by Friday, Jul 12
Get it by Friday, Jul 12
Get it by Friday, Jul 12
Get it by Friday, Jul 12
Get it Jul 15 - 19
Customer ratings
Sound quality
4.3
4.7
3.9
4.9
4.0
4.5
Remote Control
3.9
4.7
4.7
4.8
4.3
4.3
Value for money
4.3
4.3
4.3
4.2
Volume control
4.0
4.6
4.0
4.8
Bluetooth connectivity
5.0
4.6
3.8
Sold by
Amazon.ca
Amazon.ca
Amazon.ca
Amazon.ca
DynaNic Inc.
ELECTRONIQUE HI-FI INC
power source
Corded Electric
Corded Electric
ac
Corded Electric
Corded Electric
Corded Electric
connectivity tech
Bluetooth, USB, HDMI, Auxiliary
wired
wireless, wired, Bluetooth Auxiliary Wi Fi HDMI
Bluetooth
HDMI-eARC, Optical, Bluetooth 5.3, AUX, USB
wireless, wired
speaker type
Soundbar
Soundbar
Soundbar
Soundbar
Soundbar
Subwoofer, Soundbar
mounting type
Wall Mount
Tabletop
Tabletop
Tabletop
Wall Mount, Desktop Placement
Tabletop
weight
19 pounds
24.3 pounds
14 pounds
8.6 pounds
4.69 kilograms
20.9 pounds
control method
remote, voice
remote
voice
remote
remote
remote

Looking for specific info?

Product description

The low-profile Signa S4 certified with Dolby Atmos 3.1.2 sound bar comes with a 5.9" wireless subwoofer that together deliver powerful, crystal-clear, cinematic 3D surround sound with any HD TV, even the latest 8K Ultra-HD TVs, with single-remote connectivity. At just over 2", the sound bar does not block your TV's sensor whether you wall mount it or place it on the shelf. Features Polk's patented Voice Adjust technology, which lets you customize voice levels without affecting the soundtrack, so you hear clear dialogues every time! The Bass Adjust Technology gives you the power to control the bass on both the sound bar and the subwoofer simultaneously and give you deeper bass impact. Experience True 3D surround sound, whether it is added warmth in your music or special effects like gunshots or realistic whirring of helicopters flying overhead, the Dolby Atmos Certified ensures you are virtual height effects elevated right to your listening area. What's more - stream your favorite music wirelessly through Amazon Music HD, Apple Music, Roon, Qobuz, Spotify, Tidal and more. The HDMI eARC output gives you uncompromised, flawless sound reproduction. A great sound bar that comes a value never imagined before!

Product information

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Polk Audio Signa S4 Sound Bar with Wireless Subwoofer - Dolby Atmos 3D Audio, Exclusive VoiceAdjust & BassAdjust Technology, HDMI eARC, Works with 8K, 4K & HD TVs, Bluetooth, Wireless Streaming


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Customer reviews

4.3 out of 5 stars
4.3 out of 5
22,405 global ratings
Good value for the money!
5 Stars
Good value for the money!
Pleasantly surprised with this. When I learned Polk was finally releasing an Atmos capable bar I jumped on it. I looked at practically every system available in Canada, and have NO idea why these things need wifi or voice assistants when the smart tv it's invariably connected to does. I had managed to get demonstrations from friends of both the Sonos Arc and Beam gen 2, and would say that the arc without bass unit is better but almost twice as expensive. For my smaller space it does a great job, and can annoy the hell outta the neighbours if I was that type of person.p.s. the meezer thinks its tasty too
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Top reviews from Canada

Reviewed in Canada on June 26, 2024
Style: S2 Soundbar + SubwooferVerified Purchase
This sound bar is amazing, i have had no problems with it, its simple and easy to use. Only one wish is that i wish i could connect bluetooth speakers to pair with it. But thats not a issue, it still was worth every penny!
Reviewed in Canada on January 8, 2022
Style: S2 Soundbar + SubwooferVerified Purchase
I wanted to write this review early because there were so many negative reviews about the auto sleep after 15 mins feature, I almost didn't buy it.

First: I bought this in Jan 2022, and my unit has the option to turn off the auto sleep feature by holding the [TV] button on the remote for 5 seconds. The setup was very straight forward, the manual is 2 pages with pictures, with basically no wrong options.

It comes with a HDMI ARC and optical input, only connect one. I'm using the ARC and the speaker turns on ~10 seconds after my tv, and off ~5 seconds after, which isn't great but it works.

I think the sound is great for the price, but the limitations are very apparent at higher volumes. The movie button gives you pretty good range and base (with some adjustments), but at higher volumes the enhanced dialog settings 3, and sometimes 2, become useless.

I have it connected to my Insignia Fire Tv, and in movie mode at 50-60 volume it’s loud enough that I need to yell when I’m talking to someone a few feet away, while still experiencing incredibly clear sound. The bass on max in movie mode was enough to shake the room.

Overall, it’s exactly what I was looking for at this price point (<$300CAD) and the sound quality exceeded my expectations despite a few limitations with the enhanced dialog feature.
21 people found this helpful
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Reviewed in Canada on June 2, 2024
Style: S3 Soundbar + SubwooferVerified Purchase
than the other brands we tried. You're not getting the quality and build you would get with a $1500.00 set .... but it better than what you would expect for what you are paying.
Reviewed in Canada on October 23, 2023
Style: S2 Soundbar + SubwooferVerified Purchase
I bought 2 sets for my new place on Prime Day. Super easy to set up. I wish the subwoofer power cord was longer. Also It wasn’t obvious that the optical cord has a specific shape so it has to be plugged into the TV and sound bar a specific way. I wish the instructions had pointed that out to a non tech person like me. At first glance it looked perfectly square. I bought a Samsung TV and it was really hard to see the shape of the port once it was up on the mantle. You are warned. I thought I put it in the wrong way but I have sound. Also, there is no volume indicator, just your ears. I would like the next generation to have an on screen visual volume adjustment. Love the slim design, it blocks basically non of my screen. Very happy getting my sound systems updated.
5 people found this helpful
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Reviewed in Canada on March 29, 2024
Style: S2 Soundbar + SubwooferVerified Purchase
This is my third polk audio soundbar. By far, my favourite. I’ve also used Samsung and LG bars - I will hands down always go back to Polk. For the price, you won’t get better sound and pumping bass. I highly recommend using the eARC connection as it seems to sync better with the video than the optical connection. The only thing I’d warn about is that because the soundbar is so thin, you need to be really accurate with your holes if you want to wall mount and hide your wires. I’d even suggest purchasing a power and HDMI cable that’s a bit thinner than the stock ones that the unit comes with. You won’t be disappointed.
Reviewed in Canada on February 21, 2023
Style: S4 Soundbar + Subwoofer w/ Dolby AtmosVerified Purchase
I really was hoping this soundbar was going to be a replacement for Klipsch Soundbar 48" it was replacing (it died) but it wasn't even close. Literally when the wife asks "why are we still using the TV speakers" when the soundbar is on, you know you have a problem. I found "movie" mode the best sounding overall but it still sounded "hallow" like the the TV speakers and I'm starting to think this is a problem with plastic soundbar cabinets vs MDF cabinets like the Klipsch unit was. I tried the dialogue enhancement modes, and although they work, they amplify the "hallow" sound I mentioned above along with the voices. Surprisingly the subwoofer for it's size is fairly good but suffers from becoming too "boomy" when the sound level increases. I tested Atmos with a couple of Netflix shows and the Amazon Firesticks built in Atmos test clip and it sounded "OK" (light goes blue for Atmos content) but I'd rather they have just not included that and concentrated on a good 3.1 channel soundbar. Bluetooth was easy to connect to and in "music" mode it sounded good but that's not what I was buying it for. Really disappointed as I have a fairly high end Polk 5.1 speaker system in my basement family room so was expecting Polk's general level of quality and this just wasn't it. The last issue was DTS support. The Polk page for the Signa S4 doesn't list supported formats and checking the manual also yielded no results and it turns out it has no DTS support! I have some Blueray content with DTS and DTS-HD and it has to be transcoded. I thought today we were past that and they all supported DTS. I'd recommend this a bedroom best case but I think there are better options out there even then for the dollar value.
9 people found this helpful
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Reviewed in Canada on April 26, 2024
Style: S2 Soundbar + SubwooferVerified Purchase
I'm very happy with this sound bar. Fantastic, clear, beautiful sound
Reviewed in Canada on October 26, 2022
Style: S2 Soundbar + SubwooferVerified Purchase
The Signa S2 is, perhaps, one of the best "bang-for-your-buck" sound bars I have found. The sound quality is crisp and clean, and when paired to the sub, very well-rounded. I find it to exceed my expectations for the price.
My only gripe is related to the settings...there is no display field (only small lights), so it's challenging to know where your settings (bass, treble) and preset values sit.
I have yet to experience issues with connection as per other reviews, and the initial/ongoing sub pairing has been flawless.
Overall, I would highly recommend this to anyone looking for a high-quality, cost-effective sound bar.
2 people found this helpful
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Top reviews from other countries

L. E. Malka
5.0 out of 5 stars Amazing
Reviewed in the United States on June 15, 2024
Style: S4 Soundbar + Subwoofer w/ Dolby AtmosVerified Purchase
I am not a sound expert, but we have Bose and other highly rated sound products at the house, and this unit is absolutely outstanding. It’s connected to my Sony Bravia A80L. The TV has an interactive wizard that discovered the unit and configured it easily. Make sure to connect via the TV HDMI-3 port. Also I love the remote and how base can be controlled so easily. Also love how it pairs to my iPhone so fast and I can stream via Airplay. The unit is sleek, the base is great, clarity, volume, everything is top notch. The old time players (Bose) have a brand name but after reading reviews about them I took a chance with this unit and it paid off.
Highly recommended.
7 people found this helpful
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Oz
5.0 out of 5 stars La mejor relación calidad precio con este artículo que cumple con el sonido espectacular de Polk
Reviewed in Mexico on November 8, 2023
Style: S2 Soundbar + SubwooferVerified Purchase
La calidad de sonido de este sistema es muy buena y es muy sencilla la instalación, solo se conectan los cables de alimentación, el cable HDMI, el cable óptico y listo. El control remoto es muy fácil de utilizar, solo con oprimir un botón activas el sonido tanto para modo cine, música o nocturno. Sin duda es un equipo de sonido que vale la pena, siendo una barra delgada y el subwoofer (inalámbrico) pequeño, brindan un sonido claro y de bajos potentes.
3 people found this helpful
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Ives Saddai Amaya Ruiz
5.0 out of 5 stars Exelente producto
Reviewed in Mexico on October 2, 2023
Style: S4 Soundbar + Subwoofer w/ Dolby AtmosVerified Purchase
Muy bueno, buen sonido, bajos profundos y sonido claro. Volumen exelente, buen tamaño , muy práctico muy recomendable 👍
One person found this helpful
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Micaela Natal RN
5.0 out of 5 stars Simplesmente o melhor
Reviewed in Brazil on March 7, 2022
Style: S2 Soundbar + SubwooferVerified Purchase
Melhor custo benefício sem dúvidas qualidade sem tamanho
One person found this helpful
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karel
4.0 out of 5 stars heeft enkele beperkingen maar ik ben relatief tevreden
Reviewed in Belgium on November 22, 2023
Style: S2 Soundbar + SubwooferVerified Purchase
heeft enkele beperkingen maar ik ben relatief tevreden.
indien nieuwe model niet veel duurder, koop dan beter dat