Signa S4 Refurbished

Dolby Atmos 3.1.2 Sound Bar with Wireless Subwoofer

C$ 399.00 Price reduced from C$ 549.00
5 out of 5 Customer Rating
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Enjoy the latest blockbuster releases, immersive music, and your favorite TV shows in the amazing 3D sound provided by Dolby Atmos* and the award-winning Signa S4.

  • Dolby Atmos Certified 3.1.2 Sound Bar System
  • VoiceAdjust™ Technology—Hear Every Word
  • Customizable Sound—Movie, Music, and Night Modes
  • One Cable Set Up With Any TV (eARC or ARC HDMI, Optical, or Aux)

  • In Stock

C$ 399.00 Price reduced from C$ 549.00

Signa S4 Refurbished

Signa S4 Refurbished

C$ 399.00 Price reduced from C$ 549.00
C$ 399.00 Price reduced from C$ 549.00
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True Dolby Atmos Surround Sound

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

Signature Polk sound

Deep Effortless Bass

Signa S4’s powerful wireless subwoofer provides the deep, effortless bass that Polk is famous for, at loudness levels that are surprising for its size. Polk's exclusive BassAdjust™ mode controls bass on both the sound bar and sub ensuring seamless blending. The subwoofer connects automatically on start-up and can be conveniently placed nearly anywhere in the room. Put it up front for maximum impact or try behind the couch to feel the rumble.

Sets Up In Seconds

Set up is easy: simply connect the included HDMI or optical cable (or aux-in on older TVs) for the ultimate sound quality for any TV—even the latest 8K Ultra-HD TVs. Signa S4 is pre-programmed to work with most TV remotes and it quickly pairs to your mobile device via Bluetooth to stream your favorite music. Signa S4’s low-profile design won’t block your TV or your remote. Signa S4 can be wall-mounted for flexible placement.

Signa S4 Refurbished

Powerful Home Cinema

Signa S4 Refurbished

Powerful Home Cinema

Eleven drivers—including two dedicated upfiring height speakers—expand the sound field above and around you.

It’s never been easier to fill your room with sound, without filling your room with speakers.

Leveraging 50 years of Polk hi-fi engineering innovation, Signa S4 is designed to deliver and built to last.

Key Technologies

  • Upgrade your home theater with height speakers to unleash a fully immersive 3D audio experience, or engage all speakers to create a 3D audio sensation from legacy content even without height speakers.
  • Connect and play music directly from your smartphone, tablet or other compatible device.
  • eARC (Enhanced Audio Return Channel) makes playing TV audio simple with a single HDMI connection. eARC supports HD and 3D audio formats such as Dolby TrueHD, DTS HD Master Audio, Dolby Atmos and more.
  • Connect your audio source, such as a TV, Blu-ray player, or game console using an optical cable. This digital connection ensures high-quality audio transmission, delivering clear and accurate sound.
  • Connect audio sources such as smartphones, tablets, or MP3 players using a standard 3.5mm auxiliary cable. The aux input provides a simple and versatile way to play audio from your portable devices.
  • Adjust the vocal levels from the sound bar with Polk Voice Adjust technology for clear, easy-to-understand dialogue.
  • One-button presets for movie watching and music listening, along with Night Mode—so you won’t wake the neighbors or kids during late-night bingewatching sessions.
  • Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Signa S4 Refurbished
Details & Specifications

Slim, elegant design

Slim, elegant design


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Some questions about refurbished units: Do they come with a warranty/guarantee, if so what is it? Do they have any visible damage? Do they perform exactly the same as a new unit? Are there any missing parts/accessories/manuals etc.?

Asked by: London Joe
Hello, Our refurbished items are checked to operate at factory specification and to perform the same as a new model. There's a chance there may be a minor blemish on the casework. All parts and accessories as per what's listed in the manual are included. Here is a link with details on warranties:
Answered by: Polk Audio
Date published: 2023-08-24

How good is Dolby Atmos trough Bluetooth with PC Microsoft Dolby Access? Can I get Dolby Atmos from my PC trough HDMI cable? How can I get video and audio Dolby Atmos together out of PC and how to separate video to TV and Dolby Atmos audio to Signa S4?

Asked by: Ilia
Dolby Atmos playback can be achieved when connected to a device with HDMI ARC. Dolby Atmos is not available using Bluetooth with the S4 soundbar.
Answered by: Polk Audio
Date published: 2022-12-06

Will the signa 4 need a firmware update and how to do it?

Asked by: Domi
There is currently no update available since release. However, for future reference, the update process is outlined below. Items necessary: USB Flash drive (minimum 1GB) formatted to FAT32. 2.1. Connecting to the USB flash drive (1) Preparation • Use a memory that supports USB2.0. • Save the update file on a blank USB flash drive for use. • USB format: Prepare a USB memory formatted in FAT32. • Do not run the USB flash drive through a hub. • Do not connect a computer to the USB port of this unit using a USB cable. • Do not use an extension cable when connecting the USB flash drive unit. • If a USB flash drive cannot be updated, replace it with a different USB flash drive and perform the update again. 2.2. Downloaded File Copy the downloaded file to the USB flash drive root directory. 2.3. Starting up (1) Plug the power cord into both the SoundBar and Subwoofer and pair the Subwoofer to the SoundBar. Note: Keep the SoundBar and Subwoofer close together. (2-1) Insert the USB flash drive where the firmware is stored into the SoundBar. See "2.4. Displays" for information on checking the update progress (2-2) After inserting the USB flash drive into the SoundBar, wait for the update to start.(5 - 10 sec) Note: If the update does not start, reconnect the power cord and try again from (1). (2-3) When the update starts, the LED blinks in white to show the progress. • The LEDs #1-4 blink to indicate the number of completed updates. • The time in which the three LEDs blink is the longest. (5 - 10 min) • The Subwoofer LED blinks quickly during an update of the Subwoofer. (Does not blink if there is no Subwoofer Update) (2-4) When the update is completed, four LEDs light up in white and the SoundBar restarts automatically. (3) After the restart is completed, remove the power cord and USB flash drive. (4) Turn on the power again and check the new firmware version. See "1. Version Display Mode" (5) If the update fails, the LED on the rightmost blinks in red. Remove and reconnect the power cord and try again. ---Cautions on Firmware Update--- • Do not turn off the power until updating is completed. • Initialize after the update is complete.
Answered by: Polk Audio
Date published: 2023-08-24

Can you connect polk wireless surround speakers with it?

Asked by: harvik
Hi harvik, The Signa S4 is a self-contained package. It is not a design which works with additional speakers. Here is a link to our Soundbars where surround speakers can be added (as you scroll down, you will see details of which Soundbars work with these surround speakers):
Answered by: Polk Audio
Date published: 2022-09-22
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