Polk Audio Signa S3
Score: 75/100
Klipsch Cinema 400
Score: 73/100Rankings
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.
Klipsch Cinema 400 is a 2.1-channel soundbar that offers a robust 8-inch wireless subwoofer delivering strong bass and Tractrix horn-loaded tweeters for clear highs. The absence of Dolby Atmos and limited smart features make it less future-proof. Great for TV upgrades in apartments where space is limited but powerful bass is wanted.
| Attribute | | |
|---|---|---|
— | 2.1best | |
— | 400 Wbest | |
— | 20.3 cmbest | |
| ↓ lower better | 1.8 kgbest | 12.7 kg |
1 yearsbest | 1 yearsbest | |
90 cmbest | 24.1 cm | |
5.5 cm | 24.1 cmbest | |
8.2 cm | 8.6 cmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(1) | ||
Supported Audio Formats | Dolby Digital, DTS Virtual Surround | Dolby Digital, virtual surround |
Design(4) | ||
Soundbar Weight (kg) | 1.8 kg | 12.7 kg |
Soundbar Width (cm) | 90.0 cm | 24.1 cm |
Soundbar Height (cm) | 5.5 cm | 24.1 cm |
Soundbar Depth (cm) | 8.2 cm | 8.6 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 Cinema 400 for its premium build, Tractrix horn technology, and powerful 8" wireless subwoofer that together deliver clear mids, detailed highs, and strong bass. They also appreciate the simple HDMI-ARC and wireless subwoofer setup, though they note the absence of true rear speakers and limited independent testing data.
Everyday users highlight the ease of installation and the convenience of Bluetooth music streaming, praising the low-profile design that fits neatly under TVs. With limited direct feedback, no major consumer complaints are evident beyond the typical desire for rear speakers.
