Polk Audio Signa S2 Ultra-Slim Sound Bar for Smart TV with Subwoofer

A PREMIUM ULTRA-SLIM SOUNDBAR WITH WIRELESS SUBWOOFER INCLUDED – 5 powerful full-range drivers deliver rich audio with deep bass. Polk’s exc

Is WaterproofFALSEWater Resistance LevelNot Water ResistantBluetooth Range10 metersConnectivity Technologywired, wirelessWireless TechnologyBluetoothSubwoofer Connectivity TechnologyWireless

About this item

  • A PREMIUM ULTRA-SLIM SOUNDBAR WITH WIRELESS SUBWOOFER INCLUDED – 5 powerful full-range drivers deliver rich audio with deep bass. Polk’s exclusive VoiceAdjust technology & Dolby Digital Decoding maximizes audio clarity & reduces voice delays
  • EXCELLENT SOUND AND VALUE on par with any mid- to high-range sound bars for TV with subwoofer. At just over 2" tall it fits most spaces — easily wall-mount or place in front of your TV. It won’t block your TV’s bottom edge or IR remote sensor
  • UPGRADE YOUR HOME THEATER SOUND SYSTEM – Watch your favorite shows on 4K HD Smart TV with exceptional picture quality and crystal clear sound using numerous connection possibilities, plug any audio source via HDMI, ARC optical input, and AUX
  • WIRELESSLY STREAM MUSIC from your favorite streaming apps like Pandora, Spotify, TuneIn, and others directly from your smartphone, tablet or other compatible device to this wireless sound bar for smart tv through the built-in Bluetooth technology
Category: AudioSound BarsRanked #99 of 786 in Audio
8.8Our score
Our verdict

A PREMIUM ULTRA-SLIM SOUNDBAR WITH WIRELESS SUBWOOFER INCLUDED – 5 powerful full-range drivers deliver rich audio with deep bass. Polk’s exc

Ranked #99 in Audio · 4 things we like

Quick answer The Polk Audio Signa S2 Ultra-Slim Sound Bar scores 8.8/10 with us. Amazon owners rate it 4.4 out of 5 across 21,924 reviews, above the 4.2 average of the 100 sound bars we track. It was listed at $249.00 on Amazon when we last checked in September 2026. Key facts: is waterproof FALSE, water resistance level Not Water Resistant, bluetooth range 10 meters.

The low-profile Signa S2 universal TV sound bar—a TV soundbar with subwoofer—delivers an incredible, room-filling home theater experience far beyond anything you get from your set’s small built-in speakers. It works with 4K and HD screens so you can watch your favorite shows with exceptional contrast and clarity. An included HDMI cable enables quick, easy setup.

Polk’s patented VoiceAdjust technology ensures clear dialogue, while Dolby Digital decoding provides immersive, performance-tuned surround sound. A wireless subwoofer adds deep bass impact. Plus, you can stream music through Bluetooth directly from a smartphone, tablet, or any compatible device—a true polk soundbar solution used for cinematic home theater audio.

At just 2" tall, the bar fits most spaces and is simple to wall-mount or place in front of the television

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Product information

24 specifications
Audio Output ModeSurround
Mounting TypeBar Mount,Tv Sound Bar
Enclosure MaterialPlastic
Speaker TypeSoundbar, Subwoofer
Additional FeaturesBuilt-in music streaming, VoiceAdjust
Antenna LocationFor Surround Sound Systems, For Smartphones or Tablets, For Televisions
Subwoofer Diameter2 inches
ColorBlack
Is WaterproofFALSE
Warranty TypeLimited
Maximum Range7 meters
Control MethodRemote
Speaker Size2 inches
Woofer Diameter5.25 inches
Tweeter Diameter2.54 centimeters
Water Resistance LevelNot Water Resistant
Bluetooth Range10 meters
Specific Uses For ProductHome Theatre
Controller TypeRemote Control
Connectivity Technologywired, wireless
Wireless TechnologyBluetooth
Subwoofer Connectivity TechnologyWireless
Connectivity ProtocolBluetooth
Audio Driver TypeDynamic Driver

Pros & cons

What we like
  • A PREMIUM ULTRA-SLIM SOUNDBAR WITH WIRELESS SUBWOOFER INCLUDED – 5 powerful full-range drivers deliver rich audio with deep bass. Polk’s exclusive VoiceAdjust technology & Dolby Digital Decoding maximizes audio clarity & reduces voice delays
  • EXCELLENT SOUND AND VALUE on par with any mid- to high-range sound bars for TV with subwoofer. At just over 2" tall it fits most spaces — easily wall-mount or place in front of your TV. It won’t block your TV’s bottom edge or IR remote sensor
  • UPGRADE YOUR HOME THEATER SOUND SYSTEM – Watch your favorite shows on 4K HD Smart TV with exceptional picture quality and crystal clear sound using numerous connection possibilities, plug any audio source via HDMI, ARC optical input, and AUX
  • WIRELESSLY STREAM MUSIC from your favorite streaming apps like Pandora, Spotify, TuneIn, and others directly from your smartphone, tablet or other compatible device to this wireless sound bar for smart tv through the built-in Bluetooth technology
What could be better

    Featured in our guides

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    Polk Audio Signa S2 Ultra-Slim Sound Bar: questions & answers

    Is the Polk Audio Signa S2 Ultra-Slim Sound Bar worth buying?

    Yes, it is one of the stronger picks in its group. We score the Polk Audio Signa S2 Ultra-Slim Sound Bar 8.8 out of 10. Amazon owners rate it 4.4 out of 5 across 21,924 reviews, above the 4.2 average of the 100 sound bars we track.

    How much does the Polk Audio Signa S2 Ultra-Slim Sound Bar cost?

    It was listed at $249.00 on Amazon when we last checked in September 2026. That is more than the $151.82 median for sound bars in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.

    What are the key specs of the Polk Audio Signa S2 Ultra-Slim Sound Bar?

    Is Waterproof: FALSE; Water Resistance Level: Not Water Resistant; Bluetooth Range: 10 meters; Connectivity Technology: wired, wireless; Wireless Technology: Bluetooth; Subwoofer Connectivity Technology: Wireless. All 24 specifications are in the product information table on this page.

    What are good alternatives to the Polk Audio Signa S2 Ultra-Slim Sound Bar?

    Similar, well-rated sound bars in our catalog: TCL Design Series Bang & Olufsen A65K (8.2/10, 4.1 stars from 29 owners); TCL S55H 2.1 Sound Bar (8.8/10, 4.3 stars from 638 owners); MZEIBO Sound Bar (8.6/10, 4.3 stars from 529 owners).

    Customer reviews

    All reviews on Amazon
    4.421,924 global ratings
    5 star80%
    4 star10%
    3 star10%
    2 star0%
    1 star0%

    Breakdown from the 10 most helpful reviews we imported.

    C
    Colin
    Verified purchaseDecember 9, 2018
    Good sound, clear dialog, turns on/off automatically

    June 2020: still functioning perfectly. I think once or twice I’ve had to unplug the subwoofer to get it work again. Very rare occurrence. The remote can be slightly difficult to get to work (needs the right angle) but I almost never have to use it because the TV controls it. Great sound bar, 100% recommend.December 2019 update: still working great.Original 2018: I got this speaker a couple weeks ago and it's been working great so far (November 2018). I plugged in both the HDMI ARC cable and the optical cable, per the instructions and it started working after I turned the TV off and then on. I

    R
    RB
    Verified purchaseDecember 16, 2022
    Easy to setup, easy to use, great sound

    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 t

    B
    BDLamp
    Verified purchaseMay 26, 2026
    Pretty Good Sound Quality for the Price

    This speaker system is very reliable and works well with my Smart TV and my phones. I have been using it for the past six years with no issues. It is portable and durable, working just as well as it did when I first bought it. I have moved it to two different apartments and it easily transports from one apartment to the next. It is pretty discreet, blending well with my Smart TV console.My main critiques are that the sound system doesn't always interpret the sound as best as it could, especially the lower registers of the bass guitar and the bass drum. It is good at highlighting the treble sou

    D
    D. Canada
    Verified purchaseAugust 27, 2026
    Very Good Soundbar Made By A Reputable Company

    What a great soundbar. I purchased this brand and model as a replacement for another brand that quit working and then the company went out of business with no warning. The sound is superb and the bass coming from the wireless subwoofer has a nice subtle kick to it for all your music or tv shows and music, especially for its size. Setup was a breeze and operation is very simple. The remote is very intuitive and allows for all sound adjustments. It even has adjustment for increasing voice clarity. Soundbar can be mounted on a wall, tv stand or set on an entertainment stand.

    C
    Cassie Robinson
    Verified purchaseAugust 18, 2026
    Worth the money

    Huge upgrade for the money. Louder than you will ever need. Bass is decent enough to make me happy. Don’t expect to rattle the windows but this adds enough low end to keep a guy happy. Pleasantly surprised.

    J
    Jan Strnad
    Verified purchaseAugust 11, 2022
    Surprisingly good sound, easy to set up, you can turn off auto-off

    Lots of reviews here, and many complain about the "auto-off" feature that turns the soundbar off if there's no audio input for 15 minutes. YOU CAN TURN THIS FEATURE OFF. Hold down the "TV" button on the remote for about 5 seconds; a light will flash on the soundbar and the feature will be OFF. Repeat the process to turn it back on again.Now that that's out of the way:I've been using an A/V receiver and hi-fi speakers for a 3.0 (front right, left, center) experience. The problem is, with an over-the-air antenna with TiVo DVR, Roku, smart TV, and disc player, it's gotten very complicated. I turn

    D
    D. Engel
    Verified purchaseJuly 21, 2020
    Decent - Needs Improvement

    This is a mediocre sound bar for the price. I wasn't expecting a lot for $200. Perhaps my expectations are high in the A/V department. I just moved from a house where I had built a 7.2 home theater system. It was a modest system, but nothing Home Theater magazine would feature. So, I have a bit of understanding and experience with home theaters, audio and video. In my new house I don't have a home theater yet, and I needed something that was better than my TV speakers. I knew I wasn't buying a home theater system with this purchase, however. And my 3 star review is not based on this bar's soun

    T
    Thomas Biggerstaff
    Verified purchaseAugust 18, 2026
    Great sound system

    Fantastic soundbar system. I was nervous about the sub but it sounds perfect and not overwhelming. Plus, you can control the bass. Crystal clear sound, miles above my previous soundbar. Highly recommended!

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.