LG SN5Y vs Polk Audio Signa S4 review

Votes 1 1
Rating 5 5

LG SN5Y vs Polk Audio Signa S4 comparison chart

LG SN5Y vs Polk Audio Signa S4 review

Polk Audio Signa S4

If you have already decided that you want to buy a new soundbar, but still don’t know what exactly you want, the LG SN5Y vs Polk Audio Signa S4 comparison is here to offer you two decent solutions. The LG SN5Y was rated 6, while the Polk Audio Signa S4 has a rating 7.8. The soundbars are equipped with a different number of buttons, power, volume down, volume up, function for the SN5Y and power, source, demo, volume down, volume up for the Signa S4.

Audio features

Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that SN5Y has 2.1 and Signa S4 has 3.1.2. These rivals can be compared in terms of power, 400 (overall) versus 80 (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 6 out of 10 received the LG SN5Y for audio features and specs, but the Polk Audio Signa S4 received 5 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 1/1 HDMI inputs/outputs in the LG SN5Y versus 0/1 HDMIs in the Polk Audio Signa S4. As in the SN5Y, so in the Signa S4 there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. We rated the connectivity of the SN5Y at 8 out of 10, while the Signa S4 was rated 6/10. Each of the soundbars can be controlled using the application. The soundbars in this review are 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 SN5Y was rated 5/10, while the Signa S4 received a mark of 9/10 for multichannel surround.

Advantages Polk Audio Signa S4 over LG SN5Y

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


Signa S4


Polk Audio