Yamaha SR-C20A vs Polk Audio Signa S4 review

Votes 1 1
Rating 5 5

Yamaha SR-C20A vs Polk Audio Signa S4 comparison chart

Yamaha SR-C20A
Polk Audio Signa S4

Yamaha SR-C20A vs Polk Audio Signa S4 review

Yamaha SR-C20A
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 Yamaha SR-C20A vs Polk Audio Signa S4 comparison is here to offer you two decent solutions. The Yamaha SR-C20A was rated 3.8, while the Polk Audio Signa S4 has a rating 7.8. Soundbars have the same set of buttons - power, source, demo, volume down, volume up.

Audio features

Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that SR-C20A has 2.1 and Signa S4 has 3.1.2. These rivals can be compared in terms of power, 100 (overall) versus 80 (overall) according to devices. A built-in subwoofer is available only in the Yamaha SR-C20A. Audio features and specs of considered models we rated 5 out of 10 in our ranking.

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. 0/1 HDMI inputs/outputs are in each of soundbars. As in the SR-C20A, 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 SR-C20A at 4 out of 10, while the Signa S4 was rated 6/10.


The manufacturer of the Signa S4 provides a device control 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 SR-C20A was rated 6/10, while the Signa S4 received a mark of 9/10 for multichannel surround.

Advantages Yamaha SR-C20A over Polk Audio Signa S4

  • Built-in subwoofer

Advantages Polk Audio Signa S4 over Yamaha SR-C20A

  • Separate subwoofer in package
  • Amazon Music compatible
  • Spotify support
  • WI-FI enabled
  • App control
  • Microphone
  • Compatible with Dolby Atmos
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Yamaha SR-C20A
Polk Audio Signa S4


Signa S4


Polk Audio