
Polk Audio Signa S4
Score: 73/100
Sonos Era 100
Score: 73/100Rankings

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 Sonos Era 100 is a compact, AC-powered smart speaker delivering true-stereo sound with dual tweeters and a larger woofer. It supports Wi-Fi 6, Bluetooth 5.0, and USB-C line-in, but lacks Google Assistant and portability.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 100 Wbest | |
1best | — | |
1best | — | |
5best | 5best | |
| ↓ lower better | 8.6 kg | 2.02 kgbest |
36 monthsbest | 12 months |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Design(1) | ||
Overall Weight (kg) | 8.6 kg | 2.02 kg |
Warranty & Support(1) | ||
Warranty Period (months) | 36 months | 12 months |
Accessories(1) | ||
Remote Control Included | true | false |
Audio(2) | ||
Channel Configuration | 3.1.2 | 2.0 |
Supported Audio Formats | Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Virtual:X | Dolby Digital 2.0 Stereo |


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 rate the Era 100 highly, highlighting its dual tweeters, larger woofer, Wi-Fi 6, Bluetooth 5.0 and USB-C line-in as significant upgrades over the Sonos One, while noting modest sub-bass and missing Google Assistant.
Everyday users praise the rich stereo sound, easy setup, and Alexa integration, but note the lack of Google Assistant, weak sub-bass, and the need to buy adapters separately.
“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.”


