--- title: "Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology" url: "https://omorp.com/product/polk-audio-signa-s4-tv-sound-bar-with-subwoofer-dolby-atmos-audio-voiceadjust-bassadjust-technology-hdmi-earc-wireless-subwoofer-works-with-8k-4k-hd-tvs-bluetooth-wireless-streaming-b09j753m18" asin: "B09J753M18" brand: "Polk Audio" category: "audio" price: "$449" price_checked: "2026-08-10" site: "Elan's Best (omorp.com)" --- # Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology, HDMI eARC, Wireless Subwoofer works with 8K, 4K, & HD TVs, Bluetooth, Wireless Streaming The Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology was $449 when we checked it on 2026-08-10. That is the median of the 8 prices we have recorded for it. ## Overview The low-profile Signa S4 certified with Dolby Atmos 3.1.2 sound bar comes with a 5.9" wireless subwoofer that together deliver powerful, crystal-clear, cinematic 3D surround sound with any HD TV, even the latest 8K Ultra-HD TVs, with single-remote connectivity. As a versatile entry in home audio sound bars, this streamlined unit stands just over 2", so it never blocks your TV's sensor whether you wall-mount it or place it on a shelf. Features Polk's patented Voice Adjust technology, allowing you to dial in speech while leaving the soundtrack untouched, so dialogues stay clear. Bass Adjust Technology lets you tame or unleash low end on both the bar and sub simultaneously for deeper impact. Experience true 3D audio-added warmth in music, sharp effects like gunshots, or the whir of choppers o ## Editor's note This is my value pick: good virtual surround, and the included subwoofer does real work. ## Why we picked it Best for: A living room that wants real height channels and a separate subwoofer, with floor space for it. The only pick here with real up-firing drivers and a wireless subwoofer in the box, plus a dialogue control that works. **What we like** - Real up-firing height drivers rather than a psychoacoustic effect, which is what makes Atmos audible as height - Wireless subwoofer included in the box, so the low end is a separate cabinet rather than a compromise - VoiceAdjust raises the center channel independently, which is the actual fix for buried dialogue - Slim enough not to block the bottom of a television standing on a stand **Watch outs** - Surround effects are processed rather than produced by rear speakers, so they widen rather than surround - The slim cabinet hardens at high volume in the midrange, which the subwoofer does not mask - The subwoofer needs floor space and its own mains socket, which small rooms often do not have - No Wi-Fi, so music from a phone arrives over Bluetooth rather than at streaming quality - The subwoofer pairs to the bar over its own wireless link, and re-pairing it after a power cut is a manual process ## Specifications - Color: Black - Item Dimensions D x W x H: 3.7"D x 41.2"W x 2.4"H - Item Weight: 19 pounds - Compatible Devices: Smartphone, Tablet, Television - Audio Driver Type: Dynamic Driver - Audio Driver Size: 5.9 inches - Brand: Polk Audio ## Price history (tracked by Elan's Best) - Current: $449 (checked 2026-08-10) - Lowest we have recorded: $336 on 2026-06-26 - Highest we have recorded: $449 on 2026-06-29 - Our own weekly checks: 8 over 45 days, from 2026-06-26 to 2026-08-10 - Median of our checks: $449 ## Common questions ### Is the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology worth it? This is my value pick: good virtual surround, and the included subwoofer does real work. Its Amazon listing shows 4.3 out of 5 stars across 1,421 ratings, which is the retailer's figure and not our verdict. ### How much does the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology cost? The Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology was $449 when we checked it on 2026-08-10. Prices change often, so the live retailer link carries the current number. ### Is now a good time to buy the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology? At $449 the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology is near the median of the 8 prices we have recorded for it. The lowest we have seen is $336 on 2026-06-26, so waiting for a repeat of that would save roughly $113. ### What is the lowest price the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology has been? The lowest price on our record for the Polk Audio Signa S4 TV Sound Bar with Subwoofer - Dolby Atmos Audio VoiceAdjust & BassAdjust Technology is $336 on 2026-06-26, and the highest is $449 on 2026-06-29. That record is 8 weekly checks we took ourselves. Retailer rating (from the Amazon listing, not our score): 4.3 out of 5 across 1,421 reviews. --- Disclosure: Elan's Best may earn an affiliate commission on purchases made through our links, at no extra cost to the buyer. Commissions never change our picks. Source: https://omorp.com/product/polk-audio-signa-s4-tv-sound-bar-with-subwoofer-dolby-atmos-audio-voiceadjust-bassadjust-technology-hdmi-earc-wireless-subwoofer-works-with-8k-4k-hd-tvs-bluetooth-wireless-streaming-b09j753m18