Polk Audio Signa S4 soundbar front view with immersive sound and dialogue clarity.
Polk Audio Signa S4 wireless subwoofer image showing deep bass and cordless setup.
Polk Audio Signa S4 Dolby Atmos height effect illustration for cinematic immersion.
Polk Audio Signa S4 connection diagram highlighting a simple setup.
Polk Audio Signa S4 wall-mount option for a low-profile placement.
Polk Audio Signa S4 VoiceAdjust feature emphasizing clearer speech.
Polk Audio Signa S4 BassAdjust control for tailored bass response.

Polk Audio

Polk Audio Signa S4 TV Sound Bar with Subwoofer — Dolby Atmos, VoiceAdjust & BassAdjust, HDMI eARC

Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.

$616.70

In stock. Ships free, usually within 1–4 business days.

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Check the listed compatible models and specs before you order. Questions? Email us.

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

Free 30-day returns

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

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Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

Compact, cinematic sound for your TV

The Polk Audio Signa S4 is a low-profile Dolby Atmos 3.1.2 sound bar paired with a 5.9" wireless subwoofer. Together they deliver immersive sound that fills the room while staying slim enough to avoid blocking your TV's sensors. It supports 8K, 4K, and HD TVs and connects with a single remote-friendly setup, so you can control both bar and sub with ease.

Designed to sit just over 2 inches tall, Signa S4 fits on a shelf beside your screen or mounted on a wall without intrusion. The system features upfiring height channels and a seven-driver array for a true 3D audio experience that adds warmth to music and precise spatial cues for action scenes.

Sound you can feel, with adjustable controls

Polk's exclusive VoiceAdjust technology lets you bring dialogue forward while the soundtrack remains intact, so you don\'t miss words during fast-paced scenes. Bass Adjust Technology lets you tailor the low end across the bar and sub for the level of impact you prefer.

  • Dolby Atmos certified for height cues without extra speakers
  • 5.9" wireless subwoofer delivers deep, room-filling bass
  • VoiceAdjust for clearer speech and better on-screen dialogue

Smart, simple setup and versatile connections

Getting started is quick: unbox, connect with a single cable, and you’re ready to listen. HDMI eARC ensures uncompromised playback, while Bluetooth streaming lets you play favorites from services like Amazon Music HD, Apple Music, Spotify, and more. You can even manage everything with one remote.

  • One-cable setup for faster, cleaner installation
  • Bluetooth streaming for wireless music from popular services
  • Compatible with 8K, 4K, and HD TVs for broad versatility

Whether you’re watching a blockbuster, streaming music, or gaming, Signa S4 offers a compact, value-driven upgrade to your home theater. It\'s a confident, no-fuss choice that invites you to explore richer sound without clutter.

FAQ

Q: What devices work with Polk Signa S4?

A: It connects via HDMI eARC and Bluetooth to most TVs and streaming devices, supporting 8K, 4K, and HD content.

Q: How easy is the Signa S4 to install?

A: Unbox, connect a single cable, and start listening in minutes.

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