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Polk Audio

Polk Audio Signa S3 Sound Bar for TV & Wireless Subwoofer with Built-in Chromecast & Google Assistant, Low-Profile Design, Works with 8K, 4K & HD TVs, Bluetooth and Wireless Streaming

  • Based on 24,790 reviews
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$329.00 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Mar 28
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Style: S3 Soundbar + Subwoofer


Features

  • ULTRA-SLIM SOUNDBAR WITH WIRELESS SUBWOOFER Features 2.1 channel performance-tuned drivers - (2) 1.25 x 4.4oval mid-range drivers & (2) 1 Tweeters, and the included 5.25 subwoofer delivers incredible room-filling surround sound with deep bass
  • POLKS EXCLUSIVE VOICE ADJUST TECHNOLOGY & Dolby Digital 5.1 decoding help maximize sound clarity and reduce voice delays in this soundbar for TV with subwoofer; hear clear, crisp dialogue from movies, TV shows & sports with three distinct settings
  • EXCELLENT SOUND & VALUE on par with any mid- to high-range soundbars; at 2" tall, the Signa S3 Polk soundbar with subwoofer fits most spaces; easily wall-mount it or place in front of your TV; it wont block your TVs bottom edge or IR remote sensor
  • UPGRADE YOUR HOME THEATER SURROUND SOUND SYSTEM Watch favorite shows on your 4K/8K HD Smart TV with exceptional picture quality & clear sound, then plug in any audio source via HDMI ARC, optical input or 3.5mm jack for great home theater audio
  • WIRELESSLY STREAM MUSIC to these bluetooth speakers from streaming apps like Pandora, Spotify, TuneIn, and more using a smartphone, tablet or other devices via Bluetooth, or use Google Chromecast for music over Wi-Fi with a Google Home speaker
  • SET UP YOUR TV SOUNDBAR WITH SUBWOOFER IN MINUTES the included HDMI and optical cables quickly connect your TV and subwoofer to the sound bar

Description

The low-profile Signa S3 sound bar delivers an incredible, room-filling home theater experience. Built to work with any HD, 4K and 8K TV via HDMI ARC, the Signa S3 sound bar for smart TVs is easy to set up and can be controlled with a single remote. This Polk audio soundbar features Polk-patented Voice Adjust technology for clear dialogue, and Dolby Digital decoding for immersive, performance-tuned surround sound. Comes equipped with a wireless subwoofer for deep bass impact. Plus, stream your favorite music with Chromecast built-in and Google Play Music, Amazon Music HD, Apple Music, Roon, Qobuz, Spotify, Tidal and many more. This narrow, sleek sound bar can fit in most spaces be it on a tabletop or a mantle and can also be wall mounted.

Brand: Polk Audio


Speaker Maximum Output Power: 80 Watts


Frequency Response: 20 KHz


Connectivity Technology: wired, wireless


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Wall Mount


Enclosure Material: Plastic


Speaker Type: Soundbar


Additional Features: Soundbar


Antenna Location: For Televisions


Subwoofer Diameter: 5.25 Inches


Controller Type: Voice Control


Color: Black


Is Waterproof: False


Warranty Type: Limited


Control Method: Remote, Voice


Speaker Size: 2 Inches


Woofer Diameter: 5.25 Inches


Tweeter Diameter: 2.54 Centimeters


Water Resistance Level: Not Water Resistant


Bluetooth Range: 10 Meters


MP3 player: No


Specific Uses For Product: Home entertainment, Music streaming, Improving audio quality in various environments


Unit Count: 1.0 Count


Item Dimensions D x W x H: 3.25"D x 35.37"W x 2.12"H


Item Weight: 8.6 Kilograms


Compatible Devices: Phones, Smartphone, Tablet, Television


Power Source: AC


Brand: Polk Audio


Model Number: Signa S3


Model Name: Signa S3


Built-In Media: HDMI cable, Optical cable, Remote control with batteries, Sound Bar, Subwoofer


Age Range Description: Adult


Number of Items: 2


Customer Package Type: FFP


UPC: 747192131920


Manufacturer: Sound United


Item Type Name: Soundbar


Warranty Description: 1 year manufacturer


Speaker Maximum Output Power: 80 Watts


Frequency Response: 20 KHz


Number of Audio Channels: 5.1


Connectivity Technology: wired, wireless


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Bluetooth, Wi-Fi


Audio Driver Type: Dynamic Driver


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Great sound great value
Style: S2 Soundbar + Subwoofer
Sound quality is fantastic, wanted a little more sound from my flat screen and this is perfect. Installation was very easy, literally plug and play. Soundbar has good clarity and sub has a good amount of punch. Im in an apartment so no need for crazy volume.
Reviewed in the United States on February 8, 2026 by Amazon Customer
    • Easy to setup, easy to use, great sound
Style: S2 Soundbar + Subwoofer
This relatively low cost sound bar has remarkably good sound for such a low profile. Setup was easy. It came with HDMI and optical cables for attachment to the TV. I attached the HDMI to the ARC (Audio Return Channel) HDMI connection of my flat panel and just turned it on. The TV recognized the sound bar by turning off its internal speakers and playing sound through the sound bar. Additionally, it shows the audio level bar on-screen whenever the TV or sound bar remotes are used to adjust the audio level. I plugged in the wireless subwoofer and it connected automatically to the sound bar, but there is also a manual process if necessary. It is also easy to use. There are various adjustments that can be made with the sound bar remote, but once these were made we only use the TV remote. The sound bar appears to go into sleep mode when the TV is off and comes back on when the TV is turned on. It is compatible with Dolby 2.1 content, but it cannot be upgraded with additional speakers. There are five inconspicuous buttons on the top of the sound bar: on/off, source selection, Bluetooth on/off, volume down, and volume up. Bluetooth is used for playing sound from other sources like a smart phone. These buttons also appear on the sound bar remote along with other buttons for mode selections. There are three sound buttons: Movie, Night, and Music. We use the Movie mode mostly as it “expands” the soft and loud sounds as if in a movie theater but with 2.1 speakers. The Night mode “compresses” the sound levels, making “quiets” a little louder and “louds” a little lower. 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 “quiet” portions. The final sound mode, Music, is for listening to music with the frequencies set at a more equal distribution. There are also three buttons for Voice Adjustment. These adjust the voice frequencies to make voices easier to understand. At the highest level, number 3, we can tell that voices are much clearer but they sound somewhat unnatural. Consequently, we normally use level 1 and occasionally level 2 when necessary. There are a series of lights on the front screen to indicate operation and when modes are selected. The main light comes on when the sound bar is in operation and goes off when it goes into sleep mode. This is a soft light and I do not notice it when watching the TV. The color changes whenever the Dolby 2.1 signal is received and being used. Other lights on the front will turn on momentarily whenever a new mode or source is selected to indicate that the signal has been received and the change made. There is also a light that comes on when Bluetooth is turned on. This goes off when Bluetooth is turned off or when Bluetooth goes into sleep mode if it is not in use for more than 15 minutes. Note, the auto sleep mode is not the default and this option has to be manually selected to be in use. This sound bar produces much better sound than the TV speakers and requires little attention once the adjustments are set; we mostly use the TV remote. My only criticism regards adjusting the subwoofer levels. The subwoofer has bass minus and plus adjustment buttons on the remote but, unlike the other mode adjustments, there is no visual indication that anything is happening when this is used. There isn’t even an indicator that it is wirelessly linked except for the lights used when manually connecting it. The bass can be adjusted up to the point that deep voices and drums rattle items on the shelves in the room. When adjusted down to reduce such rattles we have no way of knowing if we are at a mid or lowest level. The bass can be adjusted to what is being listened to, but it would be nice to know the actual setting so that a “standardized” level could be selected for particular circumstances. ... show more
Reviewed in the United States on December 16, 2022 by RB
    • Nice With A 2020 LG TV
Style: S2 Soundbar + Subwoofer
My first soundbar! This is definitely a big improvement in sound (volume, clarity and bass) over what were already pretty nice sounding built in television speakers which I listen to at about volume level 9 (of 100) for casual daily YouTube videos. I can bring it to level 13 when wanting to be more immersed in Netflix and such. I don’t need much volume in my home (though in my car I have a 12” subwoofer and play music at 75% volume LOL). VOLUME: The sound bar can get much louder and with that extra volume it stays more clear without being distorted unlike the built-in television speakers that start to sound distorted when it gets 50% and above in volume. REMOTE CONTROL: This soundbar CAN be controlled with my TVs remote so long as it’s connected not just with the optical audio cable but the HDMI cable as well going into an ARC HDMI port on the tv. The soundbar turns on when I turn on my tv and turns off when I turn off my tv. I don’t see a volume level on the soundbar which is my first complaint about the soundbar. It’s also not on my tv when using the soundbar. I just see a + or - on the tv when I press those buttons. EQ (ISSUE 1): Sadly there is no real EQ settings on this. There are several buttons on the REMOTE ONLY (not on the soundbar itself) that have 6 custom sound settings: Movie, Night, TV, voice 1, voice 2 and voice 3. I’m not sure if you can combine these. I switched to “night” and then “voice 3” thinking that maybe it would simply enhance the voice on night mode but when I press night mode again it resets the voice setting. So I think it’s either or. And as a 7th choice you have your bass volume. Thats the extent of EQ options. When using the built in speakers the TV had tons and tons of options with 5 frequency sliders (for sub bass, bass, mids, high mids and treble), surround sound, magic sound, add bass, add treble… so much. That’s all greyed out when using the optical audio out to this soundbar. I don’t know if all of those settings would still be there if I got an LG sound bar with my LG television. But considering I don’t know what brand of television will be my next, I couldn’t worry myself with matching the soundbar brand. So far, I guess it doesn’t matter that there aren’t as many EQ settings, the speaker sounds pretty good as is. I leave it on “Movie” for everything. I have my Apple Music hooked up on the television but haven’t used it for music yet, I presume I would want to put the soundbar on the music setting for that. ISSUE 2: I am not sure is an issue with the speaker or the television but when watching YouTube for example, if you are on the YouTube menu, there is no audio signal being sent to the speaker and thus you see single white dot of light. When you have clicked on a video and the audio signal is sent to the sound bar, the single white light turns green. The PROBLEM is that there is a fraction of a delay after the video has started before the sound starts on the speaker. There are many videos I watched that for some reason has someone speaking from the very first frame of video and the sound bar always misses it, the sound turning on 1-2 words late into the video. It has nothing to do with speaking specifically, whatever the sound is in the video, the speaker doesn’t activate until a fraction of a second after the video starts. It’s a bit jarring, and a little more annoying. If I rewind the video to the beginning I’m just repeating the situation because rewinding means there is no audio signal going to the speaker and so I see the white dot again, that once again doesn’t turn green until a fraction of a second after the video starts again. But aside from those issues, it really does sound good and I haven’t felt a need to crank up the base much because it sounds pretty full as is, without sounding too bassy or muffled. I experimented with the voice enhancement buttons. I’ve settled on “voice 2” to bring just a little bit more clarity and audibility to the voices when I have the volume a bit lower so as not to disturb others. It sounds good, I can make it louder than ever before if I want. I can control its volume and on/off without needing its remote (though I need its remote for the other EQ settings). I got it “open box” but it looked brand new I must say for $143.80 which is a good price for what this is. And I trust the Polk brand. ... show more
Reviewed in the United States on April 10, 2024 by Dan Theman

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