Polk Audio SIGNA S2 vs Sonos Arc Soundbars Comparison

By: Walter Campbell

Choosing a soundbar is not an easy task and the Polk Audio SIGNA S2 vs Sonos Arc comparison is meant to help you with that. As a result, it is clear that Arc is much better designed and has a better sound performance than SIGNA S2. According to the results of our comparison, SIGNA S2 received 5 points out of 10 possible, and Arc was rated 7 points.

Advantages Polk Audio SIGNA S2 over Sonos Arc

✔Separate subwoofer provided

Advantages Sonos Arc over Polk Audio SIGNA S2

✔Available the Apple Music service
✔Available the Amazon Music service
✔Stream music with Spotify
✔Supports object-oriented sound with Dolby Atmos technology
✔Wireless connection via Wi-Fi
✔Voice control supports
✔App for remote control
✔Built-in microphone

Audio features

The SIGNA S2 is rated 6 of 10 against 5 for the Arc according to the audio features rating.

SIGNA S2

Arc

It worth understanding the difference between the two types of amplification: a passive soundbar does not have its own amplifier and receives amplification from the signal source, while an active soundbar has a built-in amplifier. The same active type of amplification is used in the SIGNA S2 and the Arc.

There are stereo soundbars and multichannel ones. It is with the help of multichannel devices that you can get volumetric sound.

	SIGNA S2	Arc
Built-in channels	2.1	N/A
Amplification type	active	active
Output power, W	N/A	N/A
Separate speaker (in package)	0	0
Separate speaker connections	wireless	wireless

Subwoofers

Soundbars can have a built-in or external subwoofer. The first type is inseparable from the soundbar body, but for the second, you can choose a good location for deep bass. The SIGNA S2 comes with an external subwoofer. Competitors support wireless connection to a separate external subwoofer.

	SIGNA S2	Arc
Built-in subwoofer	✖	✖
Separate subwoofer (in package)	✔	✖
Separate subwoofer connections	wireless	wireless

Multichannel surround

Unlike stereo, when reproducing multichannel sound, each specific direction of sound corresponds to its dedicated channel with a separate independent loudspeaker, which creates a three-dimensional sound stage. The multichannel sound reproduction capabilities of the soundbars were rated 4 out of 10.

SIGNA S2

Arc

The peculiarity of Dolby Atmos is that this format is object-oriented, that is, each object of the audio signal is sounded separately and linked to its spatial location. Dolby Atmos surround sound support is implemented only in Sonos Arc.

DTS:X is an algorithm for processing sound scenes by the processor, linking directly to objects, rather than channels, and calculating the optimal distribution of sound output in a room. This ability to reproduce surround sound with DTS:X technology is not implemented in any of the soundbars in this comparison.

	SIGNA S2	Arc
Dolby Atmos	✖	✔
Dolby (other)	Dolby Digital	Dolby Digital
DTS:X	✖	✖
DTS (other)	has not	has not

Streaming services

The possibility to listen online to millions of songs from one device has become a reality thanks to streaming services. For the ability to work with streaming services, the SIGNA S2 received 4 points, and the Arc - 10 on a 10-point scale.

SIGNA S2

Arc

The SIGNA S2 is featured with AirPlay, but in the Arc have support for AirPlay 2. The popular Spotify service is available on the Arc.

	SIGNA S2	Arc
Apple Music (AirPlay)	AirPlay	AirPlay 2
Amazon Music	✖	✔
Spotify	✖	✔
Other streaming services	has not	Pandora, Tuneln, iHeart, Chromecast

Connectivity

The existence of a sufficient number of current connectors significantly expands the functionality of the device. For example, only through HDMI is it possible to implement the transfer of object-oriented formats, and the presence of a Bluetooth connection will allow remote control, etc. The devices received different ratings for connectivity: Polk Audio SIGNA S2 was rated 6 out of 10, and Sonos Arc was rated 7 out of 10.

SIGNA S2

Arc

The presence of Wi-Fi in the soundbar allows you to get rid of wires when connected to a sound source and get minimal audio latency when playing content from streaming services. Wireless connection via Wi-Fi is possible on the Arc.

Bluetooth connection is now one of the main communication protocols for speaker systems, which provides excellent quality and minimal audio latency. The availability of Bluetooth protocol, we can see in both models. The competitors in this comparison has 1/0 HDMI inputs/outputs.

HDMI ARC is a very usefull technology that creates a two-way communication channel between a TV and another device. This is convenient since there is no need to use optical and other cables in the system. HDMI ARC is basic for both soundbars. Unable to connect external devices via USB on both models.

	SIGNA S2	Arc
WI-FI	✖	✔
Bluetooth	✔	✔
Ethernet (RJ45)	0	1
NFC	✖	✖
HDMI input/output	1/0	1/0
HDMI ARC	✔	✔
HDMI eARC	✖	✖
HDMI CEC	✔	✔
Optical digital input/output	1/0	0/0
USB	✖	✖
Coaxial digital input/output	0/0	0/0
Analog audio input/output (RCA)	1/0	0/0
Headphone output	0	0
Subwoofer output	0	0

Features

Voice control is designed to make operating the device more convenient. This allows you to control basic soundbar functions from anywhere in the room.

Proprietary applications allow you to control your soundbars remotely. This is possible both via Bluetooth and Wi-Fi. The Arc has its own remote control application. Only Sonos Arc has a built-in microphone.

Some soundbars can be part of a multi-room system and it is an affordable solution for sounding the whole house. However, it is impossible to create a multiroom system based on each of these soundbars.