---
product_id: 393547381
title: "Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology, HDMI eARC, Wireless Subwoofer works with 8K, 4K, & HD TVs, Bluetooth, Wireless Streaming"
brand: "polk audio"
price: "38479223₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Polk Audio"
url: https://www.desertcart.vn/products/393547381-signa-s4-tv-sound-bar-with-subwoofer-dolby-atmos-audio
store_origin: VN
region: Vietnam
---

# 3.1.2 Dolby Atmos channels 10m Bluetooth range 410W max output power Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology, HDMI eARC, Wireless Subwoofer works with 8K, 4K, & HD TVs, Bluetooth, Wireless Streaming

**Brand:** polk audio
**Price:** 38479223₫
**Availability:** ✅ In Stock

## Summary

> 🎬 Elevate your home theater vibes with Polk’s Signa S4 — sound that surrounds, bass that moves you.

## Quick Answers

- **What is this?** Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology, HDMI eARC, Wireless Subwoofer works with 8K, 4K, & HD TVs, Bluetooth, Wireless Streaming by polk audio
- **How much does it cost?** 38479223₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/393547381-signa-s4-tv-sound-bar-with-subwoofer-dolby-atmos-audio)

## Best For

- polk audio enthusiasts

## Why This Product

- Trusted polk audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Wireless Bass:** 5.9-inch wireless subwoofer with BassAdjust technology delivers deep, punchy bass that you control effortlessly.
- • **Immersive 3D Soundstage:** Experience cinematic Dolby Atmos with up-firing and elevation speakers that bring audio above and around you.
- • **Sleek, Space-Smart Design:** Ultra-slim 2.36” profile fits perfectly under or mounted on your TV without blocking sensors or cluttering your space.
- • **Customizable Audio Clarity:** Polk’s exclusive VoiceAdjust technology lets you fine-tune dialogue clarity without sacrificing soundtrack depth.
- • **Seamless Setup & Compatibility:** Plug-and-play with HDMI eARC for instant connection to any 8K, 4K, or HD TV—no tech headaches, just premium sound.

## Overview

The Polk Signa S4 is a Dolby Atmos-certified 3.1.2 soundbar system featuring a 7-driver array and a 5.9-inch wireless subwoofer. It delivers immersive 3D surround sound with height channels, enhanced dialogue clarity via VoiceAdjust, and customizable bass through BassAdjust technology. Compatible with 8K, 4K, and HD TVs via HDMI eARC, it offers easy plug-and-play setup and Bluetooth streaming, all in a sleek, ultra-slim design that fits seamlessly into modern living spaces.

## 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. As a versatile entry in home audio sound bars, this streamlined unit stands just over 2", so it never blocks your TV's sensor whether you wall-mount it or place it on a shelf. Features Polk's patented Voice Adjust technology, allowing you to dial in speech while leaving the soundtrack untouched, so dialogues stay clear. Bass Adjust Technology lets you tame or unleash low end on both the bar and sub simultaneously for deeper impact. Experience true 3D audio—added warmth in music, sharp effects like gunshots, or the whir of choppers overhead—Dolby Atmos certification lifts virtual height cues right to your seat. Stream playlists over bluetooth tv speakers via desertcart Music HD, Apple Music, Roon, Qobuz, Spotify, Tidal and more. The HDMI eARC output ensures uncompromised playback. This bluetooth sound bar with subwoofer as works great as a compact surround sound system for TV. A great sound bar that comes a value never imagined before!

Review: Great sound great value - 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.
Review: This Sound Bar Is Great ! ( Real Reviewer ) - I just bought a Sony X93L with Dolby Atmos capability. Not a cheap TV. I knew I wanted a sound bar system for my living room that would do it justice. I looked & listened to sound systems by Sony, Bose, Sonos, Samsung, LG, Visio to name a few. Im a child of the 70s and grew up through the old school speakers with LOUD & LARGE surround sound home theater set ups. I love hearing all the small details around me. If i had unlimited cash I'd spent few grand on one of those systems. But i don't have that kind of money .... really I don't need that much sound system in my living room. I wanted a sound bar that would give separate bass and separation of some left and right and center channels and sound solid for movies, music and dialog. I didn't want a cheap sound either. When I listen to the brands i named before i honestly wanted to be impressed .... but just wasn't. It sounded good but many with a bar and sub together would be at least a $1000. Some much more. I came across this Polk Signa S4 and read the reviews. Polk has made solid sound for a long time. I took a chance and I'm glad i did. This sound bar is GREAT ! The build is very nice and solid. Remote is small and plastic but has very usable buttons especially the separate sound and bas volumes. Set up was fast, all needed cords included. It has very excellent center voice clarity. 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". It sounds really good and when your add the sub the bass flows in well but is also distinct and can be adjusted easily with the remote. If you want some bass rumble for those movies or thump for concert bass lines it can do it well. Is this system a full surround 7.1 plus sound experience? NO ! But you can really hear the shifts in channels reaching out in front of you from the array of speakers projection left, right, center and up. I personally found the bass in the front to the side of the bar by the TV is really good. But for me i placed the sub woofer behind me and got some really nice "surround like" feel that pulled all those sound bar channels all together to a more full room experience. Im totally satisfied and recommend this system. The price was $299 vs $1000 plus for some of the others. desertcart offered me a $200 gift card to sign up for their credit card making this sound bar cost $100. I was sold at $299 but at $100 it was a steal. Try it .... its a great living room system with Great value for the price. I Love It!

## Features

- ADVANCED ULTRA-SLIM SOUNDBAR AND WIRELESS SUB - The Signa S4 Dolby Atmos soundbar, 7-driver array, & dedicated full-range center channel deliver 3D surround sound; 5.9" sub creates WIDE SOUNDSTAGE, DEEP BASS (Waterproof: No)
- UP-FIRING SPEAKERS FOR HEIGHT ELEVATION - As well as L/R Tweeters (0.98"), (2) Racetrack Mid Drivers (4.7"x1.57") and a 0.98" Center, the L/R 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, this lets you adjust voice levels to hear clear dialog without missing a word. For max impact, control the Bluetooth sound bar with subwoofer using Bass Adjust Technology
- EXCELLENT SOUND AND VALUE - At par with mid to high-range soundbar with wireless subwoofer. At 2.36", the Signa S4 easily fits most spaces, including your wall or in front of your screen. It won’t block your TV’s bottom edge/ IR remote sensor
- 1-CABLE SETUP, WORKS WITH ANY TV INCLUDING THE LATEST 8K ULTRA-HD SETS - Get these sound bars for TV up and running in under 5 minutes—all you need to do is unbox, connect and you are ready to listen. A great addition to your home theater!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09J753M18 |
| Additional Features | Subwoofer |
| Age Range Description | Adult |
| Antenna Location | For Surround Sound Systems |
| Audio Driver Size | 5.9 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Latency | 16 Milliseconds |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #1,941 in Electronics ( See Top 100 in Electronics ) #13 in Home Audio Sound Bars |
| Bluetooth Range | 10 Meters |
| Brand | Polk Audio |
| Built-In Media | Battery, HDMI cable, Optical cable, Power cords, Quick Start Guide, Remote control with batteries, Sound Bar, Subwoofer, Wall-mount spacers, Wall-mount template |
| Color | Black |
| Compatible Devices | Smartphone, Tablet, Television |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | Analog, Bluetooth, HDMI, Optical , USB |
| Control Method | Remote, Voice |
| Controller Type | Remote Control |
| Customer Reviews | 4.4 out of 5 stars 24,915 Reviews |
| Frequency Response | 20 Hz |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 3.7"D x 41.2"W x 2.4"H |
| Item Type Name | Sound Bar |
| Item Weight | 19 Pounds |
| MP3 player | No |
| Manufacturer | Polk |
| Model Name | Signa S4 |
| Model Number | Signa S4 |
| Mounting Type | Wall Mount |
| Number of Audio Channels | 3.1.2 |
| Number of Batteries | 2 AAA batteries required. |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Processor Count | 1 |
| Speaker Maximum Output Power | 410 Watts |
| Speaker Size | 2.36 Inches |
| Speaker Type | Soundbar |
| Specific Uses For Product | home entertainment systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 15 Centimeters |
| Tweeter Diameter | 1 Inches |
| UPC | 747192135829 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 Year Limited |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 5.9 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Polk Audio
- **Connectivity Technology:** Analog, Bluetooth, HDMI, Optical, USB
- **Frequency Response:** 20 Hz
- **Speaker Maximum Output Power:** 410 Watts

## Images

![Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology, HDMI eARC, Wireless Subwoofer works with 8K, 4K, & HD TVs, Bluetooth, Wireless Streaming - Image 1](https://m.media-amazon.com/images/I/51oFOygt-pL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What are the length and height dimensions of the soundbar? How many watts is the soundbar and subwoofer?**
A: The wattage of the sound bar is 40 watts.  The subwoofer is also 40 watts!  That’s 40 watts each!  This is a very nice sounding sound bar!  The room the sound bar is in is 28 feet by 28 feet!  If your not happy with this sound bar, you don’t need a sound bar.  You need a sound system like I replaced with this bar.  My old sound system would shake the house and rattle the windows with 150 watts of awesomeness !  I now have hearing lose from all of the loudspeakers.  It may be impressive to shake the house, but believe me, it’s not worth your hearing.  My wife and kids are always getting mad because of having to repeat themselves so often.  I can hear fine.  I just wish everyone would talk louder! 😂  I was a sound man in a Art Center for over 15 years before retiring.  The hearing specialist said I need a pair of 5,000 dollar hearing aids.

**Q: Does it come with the arc hdmi cable?**
A: The HDMI cables I purchased clearly say they support HDCP 2.2 & 2.3, Enhanced Audio Return Channel (eARC) Dolby Atmos Vision and Hot Plugging.
My advice is look for a cable that has at least a 8K @ 60Hz refresh rate. 7680x4320 ultra HD resolution, compatible with 4K@120Hz and 2K@ 240Hz
I use a much more powerful sound bar but this applies to any TV that has a dedicated eARC port

**Q: What size is the subwoofer speaker**
A: Did anyone actually read his question? he asked the size of the subwoofer SPEAKER...It's 5.25" tiny little guy you aren't gonna get much bass

**Q: Will it work well with a samsung tv? or is it better to use a samsung sound bar?**
A: I have an older Samsung 56in TV built in 2009 (doesn't have a dARC connector) I have it attached with the optic fiber. It works great, but I do use the Polk remote to turn the sound on and off and adjust volume. I was using a Samsung soundbar and subwoofer, but Polk provides a vastly improved sound. And I don't have to continually adjust the volume to hear the dialog like I used to do with the Samsung sound bar.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great sound great value
*by A***R on February 8, 2026*

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.

### ⭐⭐⭐⭐⭐ This Sound Bar Is Great ! ( Real Reviewer )
*by D***E on January 3, 2024*

I just bought a Sony X93L with Dolby Atmos capability. Not a cheap TV. I knew I wanted a sound bar system for my living room that would do it justice. I looked & listened to sound systems by Sony, Bose, Sonos, Samsung, LG, Visio to name a few. Im a child of the 70s and grew up through the old school speakers with LOUD & LARGE surround sound home theater set ups. I love hearing all the small details around me. If i had unlimited cash I'd spent few grand on one of those systems. But i don't have that kind of money .... really I don't need that much sound system in my living room. I wanted a sound bar that would give separate bass and separation of some left and right and center channels and sound solid for movies, music and dialog. I didn't want a cheap sound either. When I listen to the brands i named before i honestly wanted to be impressed .... but just wasn't. It sounded good but many with a bar and sub together would be at least a $1000. Some much more. I came across this Polk Signa S4 and read the reviews. Polk has made solid sound for a long time. I took a chance and I'm glad i did. This sound bar is GREAT ! The build is very nice and solid. Remote is small and plastic but has very usable buttons especially the separate sound and bas volumes. Set up was fast, all needed cords included. It has very excellent center voice clarity. 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". It sounds really good and when your add the sub the bass flows in well but is also distinct and can be adjusted easily with the remote. If you want some bass rumble for those movies or thump for concert bass lines it can do it well. Is this system a full surround 7.1 plus sound experience? NO ! But you can really hear the shifts in channels reaching out in front of you from the array of speakers projection left, right, center and up. I personally found the bass in the front to the side of the bar by the TV is really good. But for me i placed the sub woofer behind me and got some really nice "surround like" feel that pulled all those sound bar channels all together to a more full room experience. Im totally satisfied and recommend this system. The price was $299 vs $1000 plus for some of the others. Amazon offered me a $200 gift card to sign up for their credit card making this sound bar cost $100. I was sold at $299 but at $100 it was a steal. Try it .... its a great living room system with Great value for the price. I Love It!

### ⭐⭐⭐⭐ Nice With A 2020 LG TV
*by D***N on April 10, 2024*

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.

## Frequently Bought Together

- 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
- Mounting Dream Soundbar Mount Bracket for Mounting Above or Under TV Fits Most of Sound Bars Up to 15 Lbs, with Detachable Long Extension Plates MD5420
- Mounting Dream TV Wall Mount for 32-65 Inch Television,Mount with Swivel and Tilt, Full Motion Bracket with Articulating Dual Arms, Fits 16inch Studs, Max VESA 400X400 mm, 99lbs, MD2380

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-16*