Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology
Polk Audio 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
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 o
Editor's note
This is my value pick: roughly half the price of the Sonos with good virtual surround. It's real bang for the buck, and the included sub helps.
Why we picked it
Best for: Anyone who wants true Atmos plus a wireless sub without paying flagship prices.
The value pick, costing about half the price of the Sonos while still delivering good virtual surround for real bang for the buck.
What we like
- + Real 3.1.2 Dolby Atmos with up-firing drivers
- + Included wireless subwoofer
- + VoiceAdjust for clearer dialogue
Watch outs
- - Virtual surround, not true rears
- - Slim bar limits raw output
Price history
Lowest
$336
Jun 26, 2026
Highest
$449
Jun 29, 2026
Now
$449
7 snapshots tracked. Our own weekly price history, not pulled from a third party.
About this item
- 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:
- 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
- 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 usin
- 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
- 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
Details
- Color
- Black
- Item Dimensions D x W x H
- 3.7"D x 41.2"W x 2.4"H
- Item Weight
- 19 pounds
- Compatible Devices
- Smartphone, Tablet, Television
- Audio Driver Type
- Dynamic Driver
- Audio Driver Size
- 5.9 inches
- Brand
- Polk Audio
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