82%
Polk Audio Signa S4
Dolby Atmos 3.1.2 Sound Bar with Wireless Subwoofer
Enjoy the latest blockbuster releases, immersive music, and your favourite TV shows in the amazing 3D sound provided by Dolby Atmos* and the Signa S4.
- 3D Audio with Dolby Atmos & DTS:X
- VoiceAdjust™ technology
- Bluetooth
- 7 driver array
- 5.9" wireless subwoofer
- 41.2" x 3.7" x 2.4" (Bar)
Lifelike Movie Sound
Signa S4 is Dolby Atmos Certified* to immerse you in 360 degrees of surround sound. From added ambience in music to special effects flying overhead, Signa S4 provides an incredibly realistic sound environment. Plus, standard audio played through the Signa S4 can be up-mixed to create a virtualized Atmos experience. * Requires HDMI eARC connection between sound bar and TV.
Advanced 3.1.2 Sound Bar
Enjoy the latest blockbuster releases, immersive music, and your favourite TV shows in the amazing 3D sound provided by Dolby Atmos and the Signa S4. Its advanced seven-driver array and wireless subwoofer deliver a lifelike Atmos listening experience with a huge soundstage and effortless bass. With Signa S4, you’ll hear sounds flying overhead courtesy of up-firing speakers that support Atmos height channels, and any non-Atmos content you watch can also be enjoyed in a virtual Atmos experience.
Polk VoiceAdjust® - Hear Every Word
Tired of riding the volume control to hear the dialogue during quiet scenes? Have trouble picking out voices when the bass kicks in? Polk’s VoiceAdjust™ was designed to make sure that you hear every word. This patented technology combines with Signa S4’s dedicated center channel to allow you to raise the volume of only the voices, making them clear and easy-to-understand, while leaving the rest of the soundtrack untouched.
Customisable Sound - Music, Movie, Night Modes
Late night binge-watching session? Don’t worry about waking your family or neighbors. With Night Mode, one button lowers the bass while increasing VoiceAdjust™ so you can hear every word, without raising the master volume. Plus, one-button, preset sound modes optimize the Signa S4 so you can have the best sonic experience for movie watching and music listening.
Wireless Subwoofer for Effortless Bass
Signa S4’s powerful wireless subwoofer provides the deep, effortless bass that Polk is famous for, at a loudness level that is surprising for its size. The subwoofer connects automatically on start-up and can be conveniently placed nearly anywhere in the room. Put it up front or in the corner for maximum impact or try behind the couch and feel the rumble.
Sets Up In Seconds
Set up is easy: one simple connection via the included HDMI or optical cable (or aux-in for older TVs) ensures the ultimate listening experience with virtually any TV—even the latest 8K Ultra-HD TVs. For added convenience, Signa S4 is pre-programmed to work with most TV remotes out of the box and it quickly pairs to your mobile device via Bluetooth to stream your favourite music. Lastly, Signa S4’s low-profile design won’t block your TV or your remote and can also be wall-mounted for flexible placement.
never miss a memorable moment again
Polk’s patented VoiceAdjust™ speech-clarifying technology allows you to raise and accentuate dialog without impacting the rest of the soundtrack.
Dealers selling Polk Audio near you
Polk Audio's Signa S4 punches above its size with convincing Dolby Atmos height staging and an effective up‑mixer that broadens the front soundstage, delivering lively performance for movies and music. Reviews highlight clear dialog via VoiceAdjust and a surprisingly solid low end from the included compact subwoofer, making the S4 a feature-rich, easy-to-set-up package. Robert Silva and Audioholics praised its value.
Pros
- Convincing Dolby Atmos height staging and an effective up‑mixer that broadens the front soundstage.
- Clear, forward dialogue from the dedicated center channel aided by VoiceAdjust.
- Surprisingly solid low-frequency performance from the included wireless subwoofer (audible down to ~40Hz for its size).
&
Cons
- No extra HDMI input, which limits direct connections for Blu‑ray players or additional source devices.
- No separate height-channel level control, reducing ability to fine-tune Atmos effects for different room geometries.
- Lacks Wi‑Fi and built-in voice-assistant support, limiting streaming and smart-home integration options.
Sound Quality
82/100
Bass
83/100
Reviewers praise the compact ported subwoofer (≈6") as delivering 'good bass' and a 'satisfactory' low-frequency response for a modest system. Ecoustics measured an audible response down to ~40Hz with a sharp drop below that point, so extension and output are impressive for size but limited compared with larger reference subs.
Dynamics
80/100
Reviewers report the system is lively for movies and music and that Atmos height effects add impact, yielding a good listening experience. However, the modest sub size and the ~40Hz roll-off imply limited deep-headroom and absolute slam compared with larger systems.
Show Less
Integration
82/100
Outcomes in reviews indicate the sub and bar blend well: ecoustics says the sub 'provides a good bass complement' and Dolby Atmos 'broadens the front soundstage' and 'brings added dimension.' Setup/connectivity is described as straightforward, aiding practical integration with TVs via HDMI eARC.
Build Quality
78/100
There is little direct comment on finish or long-term durability; Audioholics notes Polk soundbars are typically effortless to set up, and the package includes cables, suggesting a well-considered consumer design. No reviewers flagged build issues, but detailed fit-and-finish praise is absent.
Features Connectivity
86/100
Feature set is strong for the price: HDMI eARC (passes multichannel/Atmos), optical, analog input, Bluetooth, USB-A (firmware), VoiceAdjust and Bass Adjust controls, and included HDMI/optical cables. Remote-learning compatibility and simple controls earn good usability marks in reviews.
Value for Money
88/100
At an MSRP around $399 reviewers call the Signa S4 a reasonable-priced way to get Dolby Atmos and effective upmixing; Audioholics highlights the $400 price point and ecoustics calls the package a good value for the features it provides.
Reviews
Online Reviews & Mentions
Forum Mentions
No forum mentions found yet
FAST, EASY & NEAR
Find Polk Audio Verified Dealers Near You
Polk Audio dealers in the map