Polk Audio Signa S4 Sound Bar
This Dolby Atmos soundbar is built to elevate your home theater with 3.1.2 channel audio, a wireless subwoofer, HDMI eARC support, and rich surround sound.
Buy on AmazonIf you’re looking to upgrade your home theater audio without breaking the bank, the Polk Audio Signa S4 Sound Bar might just be the perfect fit. With its support for Dolby Atmos, a 3.1.2 channel setup, and a wireless subwoofer, the Signa S4 punches well above its price point—offering immersive sound, simple setup, and a sleek profile that blends easily into any room.
Design & Setup
Right out of the box, the Signa S4 impresses with its minimalist design. The soundbar itself is slim and unobtrusive, while the wireless subwoofer is compact enough to tuck beside a TV stand or under a side table. Setup is refreshingly easy—just plug in the soundbar and subwoofer, connect via HDMI eARC or optical, and you’re ready to go. No complex calibration, no headache.
The included remote is intuitive, and Polk’s VoiceAdjust™ technology is a standout feature, letting you fine-tune dialogue clarity without raising the overall volume. For late-night viewing or podcast listening, that’s a game-changer.
Audio Performance
Let’s get to the good stuff: the sound.
The 3.1.2 Dolby Atmos setup means you’re getting three front-facing channels, a dedicated center for dialogue, one wireless subwoofer for low-end punch, and two upward-firing drivers that create a more immersive, vertical soundstage.
Watching action movies or dramatic TV shows feels cinematic, with sound that not only surrounds you but also lifts and expands above. Gunshots ricochet, explosions rumble, and ambient effects swirl realistically around the room. For music playback, the soundbar delivers crisp highs and deep bass that easily fills the space—without distortion at higher volumes.
Features & Connectivity
Besides Dolby Atmos and HDMI eARC, the Signa S4 includes Bluetooth support, so you can stream music from your phone or tablet. It also works seamlessly with most TVs and streaming devices, and there’s no need for extra apps or updates.
What’s missing? There’s no built-in voice assistant or smart home integration, which could be a dealbreaker for some. But if you’re focused purely on performance, this is an easy trade-off to make.
Final Verdict
If you’re looking for premium surround sound on a budget, the Polk Audio Signa S4 is an easy recommendation. It delivers room-filling Dolby Atmos performance, crystal-clear dialogue, and booming bass—all in a plug-and-play package under $400.
Whether you’re upgrading from basic TV speakers or stepping into home theater audio for the first time, the Signa S4 offers outstanding value without compromise.