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Polk Audio Signa S4 Ultra-Slim Sound Bar for TV with Wireless Subwoofer, Dolby Atmos 3D Surround Sound, Compatible with 8K, 4K, HD TV, eARC and Bluetooth, Exclusive Voice and Bass Adjust Technologies

4.5 4.5 out of 5 stars 23,270 ratings

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S4 Soundbar + Subwoofer w/ Dolby Atmos

Purchase options and add-ons

Brand Polk Audio
Model Name Signa S4
Speaker Type Subwoofer, Soundbar
Connectivity Technology Bluetooth, USB, Optical, HDMI
Special Feature Subwoofer

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.Waterproof : No
  • 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 VOICE ADJUST 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.

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React Signa S2 Signa S3 Signa S4
Customer Reviews
4.2 out of 5 stars
1,284
4.5 out of 5 stars
23,270
4.5 out of 5 stars
23,270
4.5 out of 5 stars
23,270
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 Ultra-Slim Sound Bar for TV with Wireless Subwoofer, Dolby Atmos 3D Surround Sound, Compatible with 8K, 4K, HD TV, eARC and Bluetooth, Exclusive Voice and Bass Adjust Technologies
Polk Audio Signa S4 Ultra-Slim Sound Bar for TV with Wireless Subwoofer, Dolby Atmos 3D Surround Sound, Compatible with 8K, 4K, HD TV, eARC and Bluetooth, Exclusive Voice and Bass Adjust Technologies
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Price$399.00$299.00$599.95-15% $339.95
List:$399.95
-23% $192.10
List:$249.00
-27% $364.14
List:$499.99
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Bluetooth connectivity
4.4
4.4
4.0
4.5
4.4
4.3
Sound quality
4.3
4.3
4.1
4.6
4.3
4.3
Value for money
4.3
4.3
4.0
4.5
4.3
4.1
Remote Control
4.0
4.0
3.9
4.6
4.0
4.2
Volume control
4.3
4.3
4.0
4.3
Sold By
Electronics Expo (Authorized Dealer)
Amazon.com
Amazon.com
Electronics Expo (Authorized Dealer)
Amazon.com
Amazon.com
speaker size
2.36 inches
2 inches
10 inches
89.9 centimeters
6 inches
power source
Corded Electric
AC
Corded Electric
Corded Electric
AC
Information Not Available
connectivity tech
Bluetooth, Optical, USB, HDMI
wired, wireless
wired, wireless
Bluetooth, HDMI, Optical
wired, wireless
USB, Bluetooth
speaker type
Subwoofer, Soundbar
Soundbar
Soundbar
Soundbar
Soundbar, Subwoofer
Subwoofer
mounting type
Wall Mount
Wall Mount
Floor Standing
Tabletop Mount
Bar Mount,Tv Sound Bar
Wall Mount and Table Top
weight
19 pounds
8.6 kilograms
29.7 pounds
24.3 pounds
3.9 pounds
6 pounds

What's in the box

  • Sound Bar & Subwoofer
  • Remote Control & 2 AAA Batteries
  • Power Cords
  • High Speed HDMI & Optical Cables
  • Literature
  • Product guides and documents

    Looking for specific info?

    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

    Feedback

    Polk Audio Signa S4 Ultra-Slim Sound Bar for TV with Wireless Subwoofer, Dolby Atmos 3D Surround Sound, Compatible with 8K, 4K, HD TV, eARC and Bluetooth, Exclusive Voice and Bass Adjust Technologies


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    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!

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    23,270 global ratings

    Customers say

    Customers like the ease of setup of the speakers. For example, they mention it's super easy to setup and fast. They appreciate the quality of the product, saying it'll produce sound quality adequate for watching. Customers are also impresseded with the dialogue quality, saying the enhancement option is amazing. That said, they say it'd be a good unit for the price. Customers also are satisfied with sound quality. That being said, some complain about the auto turn on. Opinions are mixed on performance, and bluetooth connectivity.

    AI-generated from the text of customer reviews

    3,382 customers mention2,644 positive738 negative

    Customers like the sound quality of the speakers. They say it has a bass boost to enrich the sound, the bass that comes out of the subwoofer is incredible, and the sound is clear. They also say the external speaker is clearer and does not buzz like the TV. The mode is good for late night listening with the sound turned down so that others are not bothered by the sound. The included subwoof and independent subwoofar volume make the sound bar virtually invisible as a sound source.

    "...The other channels are distinct and create a wall of sound that "reaches out in to room before your TV and shifts left, right and up and down"...." Read more

    "...This mode is good for late night listening with the sound turned down so that others aren’t disturbed by loud explosions and you can still hear the..." Read more

    "...Install was a breeze with the eARC and the improved sound really increases our enjoyment of our TV shows and movies." Read more

    "...for my Mother-in-Law because she is hard of hearing and the external speaker is clearer and does not buzz like the TV turned up too loud...." Read more

    1,290 customers mention1,205 positive85 negative

    Customers are happy with the value of the speakers. They say it's a good unit for the price, impressive for its size and price, and provides quality sound at a great rate. Customers also say it represents a lot of performance at the price point and is an extremely good buy.

    "...Try it .... its a great living room system with Great value for the price. I Love It!" Read more

    "...Buyers who want a great product at a great price, for use in a small to medium sized living room or bedroom…I’d say this is one of, if not THE best..." Read more

    "...upgrade to the internal TV sound for most TV viewing and well worth the price...." Read more

    "...No way. But it does a great job for the money. Totally blows away the TV's built-in speakers...." Read more

    1,204 customers mention1,067 positive137 negative

    Customers like the ease of setup. They say it's very easy to setup and works well. They mention that the eARC was plug and play, and the Bluetooth subwoofer was easy to connect to the soundbar. Customers also say that the sound bar is easy to mount and includes all cables.

    "...Set up was fast, all needed cords included. It has very excellent center voice clarity...." Read more

    "...Setup was easy. It came with HDMI and optical cables for attachment to the TV...." Read more

    "...The Bluetooth subwoofer was very easy to connect to the soundbar and I haven’t experienced any issues with it losing the connection...." Read more

    "...The eARC was plug and play for me and I'm able to adjust volume with any of my remotes...." Read more

    349 customers mention253 positive96 negative

    Customers like the quality of the speakers. They say it's a solid speaker system, well made, and has a balanced sound. Some say that the bass is not overwhelmingly strong, but it does have good sound that is better than built-in TV speakers. Overall, most are happy with the quality and performance of the product.

    "...This sound bar is GREAT ! The build is very nice and solid...." Read more

    "...The S2 met my expectations in most areas. Polk put out a quality product at a great price...." Read more

    "...10+ dropped every call ever made with wifi calling turned on, constant breaches due to an enormous amount of junk apps and the very many unnecessary..." Read more

    "...The build quality is nice. You definitely need a High Speed HDMI Cable, no matter what...." Read more

    290 customers mention276 positive14 negative

    Customers are happy with the dialogue quality of the speakers. They mention that the voice enhancement option is amazing, and they love that they can adjust the clarity of the voice. They say that the dialogue enhancement settings give them clearer dialogue on modern movies than their previous center channel. They also appreciate the ability to adjust the bass and voice separately, which allows them to quickly customize the sound without having to go through menus. Customers also say that voices in movies are clearly understandable, and the highs are crystal clear.

    "...There are also three buttons for Voice Adjustment. These adjust the voice frequencies to make voices easier to understand...." Read more

    "...The dialogue enhancement settings give me clearer dialogue on modern movies than my previous center channel speaker delivered...." Read more

    "...Anyway I love the different adjustments to the volume that can be made with six different modes and can move the bass and volume as you need to..." Read more

    "...It sounds very nice and full – you can pull out the voice too, if need be, via 3 setting on the remoteCons-..." Read more

    1,021 customers mention423 positive598 negative

    Customers are mixed about the performance of the speakers. Some mention that it works well in a small room, the subwoofer works great, and the night mode works well, while others say that everything else is very poor, the remote is a little sluggish, and has a short delay.

    "...I find “night” mode to be fairly useless. It sounds to me like you disconnected the soundbar and went back to using the stock tv speakers...." Read more

    "...The subwoofer isn't a huge rumbling unit, but it works decently for what it is, I keep it in the corner...." Read more

    "...with wifi calling turned on, constant breaches due to an enormous amount of junk apps and the very many unnecessary platforms that come in Samsung..." Read more

    "...It works well, but I'd give the Polk higher marks. It is significant upgrade to the internal TV sound for most TV viewing and well worth the price...." Read more

    559 customers mention314 positive245 negative

    Customers are mixed about the bluetooth connectivity of the speakers. Some mention that it paired with their phone via Bluetooth seamlessly, and the bluetooth syncing works very easily. However, others say that they are suffering with connectivity issues and the Bluetooth just wouldn't connect.

    "...-Reliability: I have had zero issues with this unit. No loss of connection, no technical issues, malfunctions, or failures...." Read more

    "...However, the soundbar will take up one HDMI connection on your TV...." Read more

    "...for phone function and works better, faster, clearer and stays connected to bluetooths without constant error notices inability to stay connected..." Read more

    "...manually downloading the update to a USB drive because there is no Wifi connection." Read more

    284 customers mention52 positive232 negative

    Customers are dissatisfied with the auto turn on of the speakers. They mention that it turns off after a few minutes with no sound. Some say that the sound bar keeps shutting itself off.

    "...Note, the auto sleep mode is not the default and this option has to be manually selected to be in use...." Read more

    "...when it sits on a series of movies that are of low volume the bar will turn itself off. To us, this is a trade-off acceptable trade-off...." Read more

    "...The system is a bit glitchy. Occasionally it won't turn off when you turn off the TV and other minor glitches, but all can be fixed in a moment...." Read more

    "...Finally, these Signa devices have an auto-shutoff at a frequency that *anyone* would find annoying; I read in the Q&A that it does this after 15..." Read more

    Great quality and a very crisp sound
    5 Stars
    Great quality and a very crisp sound
    I was skeptical seeing a Polk soundbar being priced so low, but I’m happy I ended up purchasing it. I toggle between the 3 voice adjustments depending on what I’m watching. I saw comments on the remote, so set it up to where it is controlled with my Apple TV remote automatically. I still use the original remote for voice adjustments and I haven’t experienced any issues with it
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    Top reviews from the United States

    Reviewed in the United States on January 3, 2024
    Style: S4 Soundbar + Subwoofer w/ Dolby AtmosVerified Purchase
    41 people found this helpful
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    Reviewed in the United States on December 16, 2022
    Style: S2 Soundbar + SubwooferVerified Purchase
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    Top reviews from other countries

    Translate all reviews to English
    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
    One person found this helpful
    Report
    Rita
    5.0 out of 5 stars Great sound, easy install. Ultra slim design
    Reviewed in Canada on October 23, 2023
    Style: S2 Soundbar + SubwooferVerified Purchase
    3 people found this helpful
    Report
    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
    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
    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