The Polk Audio Signa S2 is a straightforward 2.1 soundbar that comes with a wireless subwoofer. It has an excited, V-shaped sound signature that isn't the best-balanced we've reviewed so far. On the upside, it gets loud enough for most people, although it might not perform the best when pushed to its limits, as you might hear compression and distortion. On the upside, it's decently well-made and supports wireless streaming via Bluetooth.
Our Verdict
The Polk Audio Signa S2 is a passable stereo 2.1 soundbar. It's a fairly good upgrade from your TV speakers when it comes to watching TV shows and listening to stereo music. However, due to its 2.1 speaker configuration, it doesn't have a great immersive listening experience with surround content and doesn't support Atmos, which is disappointing for movies.
- Decent build quality.
- Decent audio reproduction.
- Can get loud enough for most people.
- Sub-par sound enhancement features, limited customization.
Poor surround performance, no Atmos support.
The Polk Audio Signa S2 is very good for TV shows. Although it doesn't have a dedicated center channel, it's fairly well-balanced in the mid-range and it also features a dialogue enhancement feature to help make voices clearer.
The Polk Audio Signa S2 is a decent soundbar for music. This stereo setup comes with a wireless subwoofer that creates a lot of bass, although it has trouble creating very low-end frequencies for a deep rumble. The sound signature of this soundbar is rather excited and follows a V-shape with extra bass and excess in the treble range. This makes songs sound too boomy or too bright, depending on the track you're listening to.
The Polk Audio Signa S2 is sub-par for movies. It doesn't support Atmos so you won't be able to get height effects. On the upside, it can decode Dolby Digital content but has to downmix it to stereo to be able to play it, which doesn't result in a very immersive listening experience, and it doesn't support DTS.
Changelog
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Updated May 09, 2025:
We've updated the article with the Polk Audio Signa S2D online-exclusive added as a variant.
- Updated Sep 01, 2023: Added market comparison with the Polk Audio Magnifi Max AX SR in the Surround 5.1 box.
- Updated Mar 27, 2023: Added cable lengths to In The Box.
- Updated Mar 22, 2023: Converted to Test Bench 1.1. With this update, we've added a Mounting test and added information aboutSubwoofer Output, Spotify Connect, and Microphone Mute.
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Differences Between Sizes And Variants
The Polk Audio Signa S2 has an online exclusive variant, the Polk Audio Signa S2D. The S2D has the same specifications but a different finish, replacing the standard, black, fine-mesh fabric covering the soundbar and subwoofer with a heathered gray fabric instead. Both the standard and online-exclusive versions should perform identically.
If you come across any additional variants, let us know in the comments below.
Popular Soundbar Comparisons
The Polk Audio Signa S2 is a very straightforward system. Its 2.1 configuration is very simple and can be a good upgrade for your TV speakers. However, it isn't as well-built as some other affordable option in this price range like the TCL Alto 7+, but it performs decently well overall. For more options, check out our recommendations for the best soundbars, the best soundbars with subwoofer and the best budget soundbars.
The Samsung HW-B550 is better than the Polk Audio Signa S2. They're both budget-friendly 2.1 bars, but the Samsung soundbar performs best. It has more sound enhancement features, like a graphic EQ that lets you customize its sound to your liking. It's better-built, too, with a more balanced sound out-of-the-box than the boomy Polk.
The standalone Sonos Arc is a better soundbar than the Polk Audio Signa S2. The Sonos is better built, and it supports Dolby Atmos content. It has better center, surround, and soundstage performances and has built-in voice assistant support. It also comes with a room correction feature. However, unlike the Sonos, the Polk comes with EQ presets.
The Bose Smart Soundbar 300 is a bit better than the Polk Audio Signa S2. The Bose is a 3.0 setup with a standalone design that's ideal if you don't have a lot of space. Despite its smaller size, it has a better soundstage, and it also has a better center channel performance. The Polk does come with a dedicated sub though, so it can reproduce a little more low-bass than the Bose.
The JBL Bar 5.1 Surround is better than the Polk Audio Signa S2. The JBL is a 5.1 setup that can reproduce a more extended low-bass. It has better soundstage, center, and surround performances, too. Also, you can find more sound enhancement features, such as room correction.
The Polk Audio Magnifi Max AX SR is better than the Polk Audio Signa S2. The S2 is a 2.1 setup that's designed for stereo content like most music and TV shows. It lacks discrete satellites and Atmos support, unlike the AX SR. If you want a simpler bar, though, the S2 may still be an okay choice.
The Polk Audio Signa S2 is a better soundbar than the Bose Solo 5. The Polk has a better overall sound, and its dedicated wireless subwoofer provides more bass. It can get noticeably louder and supports audio formats over ARC. However, the Bose feels more premium and is shorter, which makes it a better option if you're looking for a compact soundbar.
The Sonos Beam is better than the Polk Audio Signa S2. The Sonos is a 3.0 setup with a discrete center channel that offers a better soundstage performance. It's better built, too. Unlike the Polk Audio soundbar, it has a room correction feature and built-in voice assistant support. However, some listeners may prefer to customize their bar's sound using the Polk Audio's EQ presets.
The Yamaha YAS-207 is a better 2.1 soundbar than the Polk Audio Signa S2. The Yamaha's sound profile is better balanced and is suitable for a wider range of stereo content. Its subwoofer also creates deeper bass, and the bar creates a better overall phantom center channel. It also features a bit more inputs like a Full HDMI In port. On the other hand, the Polk isn't entirely covered by mesh and feels a bit more durable.
The Yamaha YAS-209 is a much better soundbar than the Polk Audio Signa S2. The Yamaha has a better-balanced frequency response and performs better with music. However, it doesn't get as loud as the Polk, but it performs way better at max volume. It also has a lot more inputs and supports more audio formats, on top of being able to play content via Wi-Fi.
The Polk Audio Signa S2 is a slightly better performing 2.1 setup than the Samsung HW-T450. While both bars have a similarly bass-heavy sound profile, the Polk can get slightly louder but with more compression artifacts present. It also has an HDMI ARC input so it supports Dolby Digital, is center and surround performances are a bit better, and it has a dialogue enhancement feature. However, only the Samsung supports DTS via its Optical Audio In port.
The Vizio V Series V51-H6 is better than the Polk Audio Signa S2. The Vizio is a 5.1 setup that has discrete satellites, unlike the 2.1 Polk Audio. It reproduces a more extended low-bass. Also, it has better center and surround performances.
The Samsung HW-A450 is a better 2.1 soundbar than the Polk Audio Signa S2. The Samsung soundbar has a more neutral sound profile out-of-the-box, which some listeners may prefer. It also reproduces a more extended low-bass, and it has more sound enhancement features like a graphic EQ. That said, the Polk Audio is better built with an HDMI ARC port.
The Samsung HW-Q600A is better than the Polk Audio Signa S2. The Samsung is a 3.1.2 setup that's better built and supports Dolby Atmos content. It has better center and surround performances, and it comes with more sound enhancement features like a graphic EQ. Also, it reproduces a more extended low-bass, so you feel some more thump and rumble in your audio.
The Vizio M Series M512a-H6 is better than the Polk Audio Signa S2. The Vizio is a 5.1.2 setup with discrete satellites. It can reproduce a more extended low-bass, and unlike the Polk, it supports height content. Its soundstage, center, and surround performances are better, too.
The Polk Audio Signa S2 and the Polk Audio MagniFi MAX SR are two different soundbar setups. The SIGNA is a 2.1 setup that's decent for dialogue-centric content and music. The MagniFi MAX is a 5.1 setup that scores better overall. Unlike the SIGNA, it comes with discrete satellites and more wireless playback options. It has better center and surround performances, too. However, we noticed a lot of issues with the audio when listening to real-life content on the MagniFi Max. Other users have reported similar experiences.
Test Results
The soundbar has a very straightforward design, with a mostly plastic body and a black mesh-like fabric covering the front. On the Signa S2D variant, the fabric has a heathered gray finish instead, giving it a slightly different look. The fabric is tighter than some other soundbars like the Yamaha YAS-207, but it could still rip or tear.
The subwoofer looks rather cheap. The materials used don't look premium, and the small glossy plate around the front port looks fragile. On the standard S2 variant, the front is covered with a black mesh panel, while the S2D version features a heathered gray fabric instead.
The bar isn't too long and might fit between some 55" TV's stands. It's also rather slim and won't block the bottom part of your screen unless your TV sits flush on your table.
This subwoofer is rather small and doesn't take much more room than a typical desktop computer.
This system doesn't come with satellite speakers.
The build quality of this soundbar is decent. Its fabric doesn't feel quite as durable as soundbars that have a metal grill protecting the drivers. The bar itself is mostly made out of plastic and there's a tight mesh fabric on the front. However, the subwoofer feels rather cheap. It's made from fragile-feeling melamine and doesn't feel very durable.
- Remote
- Battery
- HDMI cable (4.9 ft / 1.5m)
- Optical cable (5.9 ft / 1.8m)
- 2x power cables (4.9 ft / 1.5m)
- Wall-mounting spacers
- Manuals
The stereo frequency response is decent. This bar has a rather excited sound profile that has a V-shape. The bar sounds either too boomy or too bright depending on the tracks you listen to. The small subwoofer creates powerful bass, but it doesn't get quite low enough for a good rumble.
The stereo soundstage is decent. This soundbar isn't particularly long, but its soundstage seemed a bit larger than the bar itself but not longer than a TV. On the upside, the focus of objects in the stereo soundstage was very good and they seem to be coming from a specific pinpoint and accurate location.
The Polk Audio Signa S2 has good stereo dynamics. This soundbar can get loud enough for most people, but cranking it up to its max volume might create noticeable compression artifacts.
The stereo total harmonic distortion performance is mediocre. You shouldn't notice anything at a normal listening volume, but when pushing the bar to its limits, there's a noticeable jump in THD throughout the range.
Due to being a 2.1 system, this bar has sub-par center channel performance. Since it doesn't have a dedicated center channel, it uses the left and right channels to create a phantom center. This doesn't sound as clear and natural as a dedicated channel, and this soundbar has a rather bass-heavy sound profile.
The Polk Audio Signa S2 has bad surround performance, but it's expected for a 2.1 soundbar. While it can receive surround sound signals, the bar downmixes everything to stereo to play it. This results in a less immersive experience and sounds seem to be coming from in front of you rather than around you. The Polk Audio Magnifi Max AX SR is a good alternative if you want a more premium surround sound.
This soundbar doesn't support Atmos content. If you're looking for a setup that can support Atmos content, check out the Sony HT-X9000F or the Polk Audio Signa S4.
This soundbar has limited sound enhancement features. It lacks room correction, meaning it might sound differently depending on your room. On the upside, unlike the Samsung HW-T450, it has a dialogue enhancement to make voices clearer. It also has a night mode to uniformize the noise from different types of content, which is nice. There are also a few EQ presets for movies and music. If you prefer a bar with more features, check out the Samsung HW-B550 or the Vizio V Series V214x-K6 instead.
This soundbar has fairly limited inputs. It only has a single HDMI ARC port, an optical input, and a typical 3.5mm audio jack.
Over its HDMI ARC port, the Polk Audio Signa S2 only supports Dolby Digital content. This should be more than enough for people who only watch content coming from streaming services or Blu-rays, as this is the most common audio format. However, some Blu-ray discs are DTS-only, which could be an issue if your favorite movie is one of those.
This soundbar doesn't have a Full HDMI port.
Unlike most soundbars, it doesn't support DTS over its optical port and can only play Dolby Digital content.
You can easily stream music, podcasts, or audiobooks from your phone or any smart devices via Bluetooth to the bar.
This soundbar doesn't support any of the high-end passthrough signals.
The interface of the soundbar is rather barebones. There are only a few lights that change depending on the input you're on and they flash at different speeds when changing the volume. The lights become green when playing Dolby Digital content.
The controls on the bar are very straightforward. You can switch inputs, power the soundbar on/off, raise or lower the volume, and you also have a Bluetooth button.
