Klipsch Cinema 400
Score: 73/100
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.
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 W | 410 Wbest | |
20.3 cmbest | 15 cm | |
| ↓ lower better | 12.7 kg | 4 kgbest |
1 years | 3 yearsbest | |
24.1 cm | 104.6 cmbest | |
24.1 cmbest | 6.1 cm | |
8.6 cm | 9.4 cmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(3) | ||
Audio Channels | 2.1 | 3.1.2 |
Total Power Output (W) | 400 W | 410 W |
Subwoofer Driver Size (cm) | 20.3 cm | 15.0 cm |
General(1) | ||
Warranty Period (years) | 1 years | 3 years |
Design(4) | ||
Soundbar Weight (kg) | 12.7 kg | 4.0 kg |
Soundbar Width (cm) | 24.1 cm | 104.6 cm |
Soundbar Height (cm) | 24.1 cm | 6.1 cm |
Soundbar Depth (cm) | 8.6 cm | 9.4 cm |
Products in the top-left offer the best value (high score, low price).
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.
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”
