Polk Audio Signa S4 vs LG SN4Y review

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Polk Audio Signa S4 vs LG SN4Y comparison chart

Polk Audio Signa S4 vs LG SN4Y review

Polk Audio Signa S4

In this article, we will talk about Polk Audio Signa S4 vs LG SN4Y comparison. The Polk Audio Signa S4 was rated 7.8, while the LG SN4Y has a rating 5.4. The soundbars are equipped with a different number of buttons, power, source, demo, volume down, volume up for the Signa S4 and power, volume down, volume up, function for the SN4Y.

Audio features

Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that Signa S4 has 3.1.2 and SN4Y has 2.1. These rivals can be compared in terms of power, 80 (overall) versus 400 (overall) according to devices. The built-in subwoofer is not implemented in any of these models. An external subwoofer can be connected to any of the units in this comparison. Rate 5 out of 10 received the Polk Audio Signa S4 for audio features and specs, but the LG SN4Y received 6 out of 10.

Streaming services

The Signa S4 can play audio from Spotify.


Wireless Internet connection is realized only in the Signa S4. Soundbars from this comparison have Bluetooth support. There are 0/1 HDMI inputs/outputs in the Polk Audio Signa S4 versus 1/1 HDMIs in the LG SN4Y. As in the Signa S4, so in the SN4Y there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. We rated the connectivity of the Signa S4 at 6 out of 10, while the SN4Y was rated 7/10.


Each of the soundbars can be controlled using the application. The Polk Audio Signa S4 equipped with a microphone. The models under consideration cannot become part of a multiroom system.

Multichannel surround

Dolby Atmos audio decoder is onboard the Signa S4. Devices from this comparison cannot process surround sound due to lack of DTS:X. The Signa S4 was rated 9/10, while the SN4Y received a mark of 6/10 for multichannel surround.

Advantages Polk Audio Signa S4 over LG SN4Y

  • Amazon Music compatible
  • Spotify support
  • WI-FI enabled
  • Microphone
  • Compatible with Dolby Atmos
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Polk Audio Signa S4


Signa S4


Polk Audio