
Polk Audio Signa S3
Score: 75/100
Polk Audio Signa S4
Score: 84/100Rankings

The Polk Signa S4 is a slim 3.1.2-channel soundbar with Dolby Atmos and a powerful wireless subwoofer, delivering strong bass and clear dialogue. Its lack of a standard HDMI input and occasional Bluetooth hiccups limit connectivity flexibility. Ideal for budget-conscious TV owners seeking immersive sound in small to medium rooms.

The Polk Signa S3 offers a low-profile 2.1-channel soundbar with built-in Chromecast and Google Assistant, providing easy streaming and dialogue enhancement. Its limited channel configuration and lack of detailed power specifications restrict surround-sound performance. Best suited for users who want a simple, affordable upgrade for modest TV setups.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 410 Wbest | |
— | 15 cmbest | |
| ↓ lower better | 1.8 kgbest | 4 kg |
1 years | 3 yearsbest | |
90 cm | 104.6 cmbest | |
5.5 cm | 6.1 cmbest | |
8.2 cm | 9.4 cmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(1) | ||
Audio Channels | 2.1 | 3.1.2 |
General(1) | ||
Warranty Period (years) | 1 years | 3 years |
Design(4) | ||
Soundbar Weight (kg) | 1.8 kg | 4.0 kg |
Soundbar Width (cm) | 90.0 cm | 104.6 cm |
Soundbar Height (cm) | 5.5 cm | 6.1 cm |
Soundbar Depth (cm) | 8.2 cm | 9.4 cm |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Signa S3 for its low-profile aesthetics, straightforward setup, and useful features like VoiceAdjust and built-in Chromecast, while noting its limitation to 2.1 channels and the lack of detailed power specs.
Everyday users appreciate the simple plug-and-play installation, clear dialogue from VoiceAdjust, and the solid bass from the wireless subwoofer, with no major complaints beyond the system's basic channel configuration.

Professional reviewers commend the Signa S4 for its impressive bass output, clear dialogue thanks to VoiceAdjust, and effective Atmos height effects, noting it offers strong value in the entry-level Atmos segment. However, they criticize the missing standard HDMI input and the need for careful bass balancing.
Everyday users love the easy wireless sub setup, the room-shaking bass, and the clear speech reproduction, especially for movies and sports. Common complaints revolve around the sub's heft, occasional Bluetooth hiccups, and the inability to connect multiple HDMI sources, with some noting the bass can dominate mids if not tuned.
“huge soundstage”

“powerful bass that rumbles behind couch”


