Polk Audio Signa S4 Ultra-Slim

The company says that if content isn't set up for Dolby Atmos, the soundbar can create a "virtual Atmos experience" by upmixing the height, surround and center channels. In addition, the Signa S4 harnesses Polk’s VoiceAdjust technology, the goal of...

Dolby Atmos is the star of this show, but Polk says the Signa S4 can also upscale non-Atmos content into highly immersive surround sound.

While we haven’t tested the Polk Signa S4 yet, it could be a really compelling alternative to Sonos’ range of soundbars - especially the latter's cheapest offering, the Sonos Beam (Gen 2). We’ll be interested to see if Polk’s new soundbar lives up to...

I’ve found that Polk soundbars have been pretty effortless to set up, so I’d bet that the Signa S4 is no exception. The system comes with an included HDMI and optical cable which should make setup a breeze even with the latest 8K Ultra-HD TVs, and the...

Available today for $399, the Polk Audio Signa S4 is the fourth soundbar in Polk Audio’s Signa line, and in a first for the manufacturer, it comes with Dolby Atmos support, including a pair of upfiring drivers that can bounce sound off the ceiling. The...

Great sound signature Real, affordable Dolby Atmos Simple setup and use

Limited settings No Wi-Fi

If you can get by without Wi-Fi and a few key controls, Polk Audio’s Signa S4 is the best Dolby Atmos option we’ve tested at its price point. It’s meant to be an instant upgrade in sound quality, and by those measures, this soundbar checks off every...

10-inch subwoofer provides added bass and depth Great for small- to mid-sized rooms 3D sound with wider dispersion and minimal distortions Compatible with most AV receivers

3D sound may seem imbalanced Sound clarity issues Not good for music

Each of the speakers in this home theater system has dynamic balance technology that provides wider dispersion with minimal distortions.

On a price-to-performance ratio, the Polk Audio Signa S4 is an excellent addition to your home theater, especially with its currently reduced price. You’ll get great, room-filling Dolby Atmos performance, all with an audio system that takes up very...

Hear every word in your favorite movies in total clarity or dance the night away with the heaviest bass beats with your new Polk Audio Signa S4 soundbar