
Roku Streambar Pro
Score: 70/100
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 Roku Streambar Pro is a 2-in-1 4K HDR streaming device and soundbar delivering 36 W of virtual surround sound with Wi-Fi and voice-assistant support. Its modest power and lack of Dolby Atmos limit cinematic impact, especially without the optional subwoofer. Best suited for apartments or dorm rooms where a simple, all-in-one streaming and audio upgrade is desired.
| Attribute | ![]() | ![]() |
|---|---|---|
2best | — | |
36 W | 410 Wbest | |
— | 15 cmbest | |
| ↓ lower better | 2.495 kgbest | 4 kg |
1 years | 3 yearsbest | |
81.79 cm | 104.6 cmbest | |
7.11 cmbest | 6.1 cm | |
9.91 cmbest | 9.4 cm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(4) | ||
Audio Channels | 2.0 | 3.1.2 |
Total Power Output (W) | 36 W | 410 W |
Dolby Atmos Support | false | true |
Wireless Subwoofer | false | true |
General(1) | ||
Warranty Period (years) | 1 years | 3 years |
Features(1) | ||
Night Mode | false | true |
Design(4) | ||
Soundbar Weight (kg) | 2.495 kg | 4.0 kg |
Soundbar Width (cm) | 81.79 cm | 104.6 cm |
Soundbar Height (cm) | 7.11 cm | 6.1 cm |
Soundbar Depth (cm) | 9.91 cm | 9.4 cm |


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

Professional reviewers praise the Streambar Pro's compact yet sturdy design, its seamless HDMI-ARC/optical connectivity, and the ability to stream 4K HDR content while delivering 36 W of virtual surround sound. They highlight the integrated voice-assistant support and USB media playback as added conveniences, but note that bass performance suffers without the optional subwoofer and that the modest power may not satisfy larger spaces.
Everyday users appreciate the ease of upgrading older TVs to 4K/HDR streaming and the noticeable boost in dialogue clarity and overall volume. The Bluetooth music streaming and voice remote are frequently mentioned as convenient features, while recurring complaints focus on thin bass, the need for an optical cable when HDMI-ARC isn't available, and the bar's length making it hard to fit in smaller cabinets.

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.
“Excellent value with combined streaming and sound upgrade.”

“Heavy and good looking.”

“One-cable ARC setup works great for me.”


