
Polk Audio Signa S4
Score: 73/100
JBL Bar 2.1
Score: 67/100Rankings

The Signa S4 is a low-profile 3.1.2-channel soundbar with a wireless subwoofer that brings Dolby Atmos immersion and clear dialogue to midsize rooms, while keeping setup simple and cost-effective.

The JBL Bar 2.1 Deep Bass (MK2) offers 300 W total output with a powerful wireless subwoofer, delivering strong bass and clear dialogue in a compact, wall-mountable package. It lacks modern smart features such as Wi-Fi, eARC and Dolby Atmos, positioning it as an entry-level home-theater solution.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 300 Wbest | |
— | 40 Hzbest | |
— | 20,000 Hzbest | |
1best | 1best | |
1best | 1best | |
5best | 4.2 | |
| ↓ lower better | 8.6 kgbest | 9.972 kg |
36 monthsbest | 12 months |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Connectivity(1) | ||
Bluetooth Version | 5.0 | 4.2 |
Video(1) | ||
HDMI eARC Support | true | false |
Build & Design(1) | ||
Overall Weight (kg) | 8.6 kg | 9.972 kg |
Warranty & Support(1) | ||
Warranty Period (months) | 36 months | 12 months |
Audio(2) | ||
Channel Configuration | 3.1.2 | 2.1 |
Supported Audio Formats | Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Virtual:X | MP3, WAV, Dolby Digital, JBL Surround Sound |


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

Professional reviewers praise the Signa S4 for delivering high-value Dolby Atmos performance, clear dialogue, and a hassle-free setup, while noting the lack of smart-home integration, expandability, and network streaming as drawbacks.
Everyday users overwhelmingly appreciate the soundbar's dialogue clarity, powerful subwoofer, and quick installation, though they note the non-backlit remote, absence of voice-assistant support, and occasional Bluetooth disconnects.

Professional reviewers praise the Bar 2.1 Deep Bass for cinematic sound and powerful bass, but note the absence of smart capabilities and lack of Atmos.
Everyday users highlight the impressive bass and easy setup, while complaining about missing smart features and occasional distortion at high volumes.
“Dialogue is crystal clear, even in loud action scenes.”

“The subwoofer hits harder than expected for its size.”

“Set up in under 10 minutes - just plugged in HDMI and it worked.”


