Nakamichi Shockwafe Pro 7.1 eARC vs Polk Audio Signa S3

If you click a link on this page and make a purchase, we may receive a small commission at no extra cost to you.
Votes 1 1
Rating 5 5

Shockwafe Pro 7.1 eARC vs Signa S3 comparison chart

Nakamichi Shockwafe Pro 7.1 eARC
Polk Audio Signa S3
Multichannel surround

Nakamichi Shockwafe Pro 7.1 eARC vs Polk Audio Signa S3 review

Nakamichi Shockwafe Pro 7.1 eARC
Polk Audio Signa S3

Comparing Nakamichi Shockwafe Pro 7.1 eARC and Polk Audio Signa S3 makes sense because it shows what devices in their segment can offer. Signa S3 offers better sound and bass than its opponent - Shockwafe Pro 7.1 eARC. According to the results of our comparison, Shockwafe Pro 7.1 eARC received 5.8 points out of 10 possible, and Signa S3 was rated 6.4 points.

Advantages Nakamichi Shockwafe Pro 7.1 eARC over Polk Audio Signa S3

  • Comes with 2 separate speakers
  • Supports object-oriented sound with Dolby Atmos technology
  • Surround sound with DTS:X support

Advantages Polk Audio Signa S3 over Nakamichi Shockwafe Pro 7.1 eARC

  • Available the Apple Music service
  • Available the Amazon Music service
  • Stream music with Spotify
  • Wireless connection via Wi-Fi
  • Voice control supports
  • App for remote control
  • Built-in microphone

Audio features

The Shockwafe Pro 7.1 eARC is rated 8 of 10 against 4 for the Signa S3 according to the audio features rating.

Shockwafe Pro 7.1 eARC
Signa S3

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 Shockwafe Pro 7.1 eARC and the Signa S3.

There are stereo soundbars and multichannel ones. It is with the help of multichannel devices that you can get volumetric sound. It is worth noting one of the main differences, the Shockwafe Pro 7.1 eARC has 7.1.4 channels, while the Signa S3 has 2.1 channels.

Shockwafe Pro 7.1 eARC Signa S3
Built-in channels7.1.42.1
Amplification typeactiveactive
Output power, W850 (overall)N/A
Separate speaker (in package)20
Separate speaker connectionswirelesshas not


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. Both reviewed devices are equipped with an external subwoofer. Competitors support wireless connection to a separate external subwoofer.

Shockwafe Pro 7.1 eARC Signa S3
Built-in subwoofer
Separate subwoofer (in package)
Separate subwoofer connectionswirelesswireless

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 Shockwafe Pro 7.1 eARC received rating 10 out of 10 for multichannel audio processing, but the Signa S3, in the same category, earned 4 out of 10 points.

Shockwafe Pro 7.1 eARC
Signa S3

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 Nakamichi Shockwafe Pro 7.1 eARC.

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. The manufacturer has implemented DTS:X technology only in Shockwafe Pro 7.1 eARC.

Shockwafe Pro 7.1 eARC Signa S3
Dolby Atmos
Dolby (other)Dolby TrueHD, Dolby Digital, Dolby Digital PlusDolby Digital
DTS (other)DTS-HD Master Audio, DTS-HD High Resolution Audio, DTS Digital Surround

Streaming services

The possibility to listen online to millions of songs from one device has become a reality thanks to streaming services.

Shockwafe Pro 7.1 eARC
Signa S3

The popular Spotify service is available on the Signa S3.

Shockwafe Pro 7.1 eARC Signa S3
Apple Music (AirPlay)
Amazon Music
Other streaming serviceshas notPandora, SoundCloud


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: Nakamichi Shockwafe Pro 7.1 eARC was rated 7 out of 10, and Polk Audio Signa S3 was rated 5 out of 10.

Shockwafe Pro 7.1 eARC
Signa S3

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 Signa S3.

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 Shockwafe Pro 7.1 eARC has 1/1 HDMI inputs/outputs, but the Signa S3 got 1/0 HDMI inputs/outputs from the manufacturer.

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. Connecting external devices via USB can be done on both models.

Shockwafe Pro 7.1 eARC Signa S3
Ethernet (RJ45)00
HDMI input/output1/11/0
Optical digital input/output1/01/0
USB1 (USB 2.0)1 (USB 2.0)
Coaxial digital input/output1/00/0
Analog audio input/output (RCA)0/00/0
Headphone output00
Subwoofer output00


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 Signa S3 has its own remote control application. Only Polk Audio Signa S3 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.

Shockwafe Pro 7.1 eARC Signa S3
Voice control
App control
Remote control


Shockwafe Pro 7.1 eARC Signa S3
Size (Wx H x D), cm/in114.3 x 7.6 x 7.8/45.5 x 3 x 3.689.8x5.6x8.3/35.3x2.1x3.2
Weight, kg/pounds2.7/62.9/6
Add another soundbar to comparison
We didn't find anything to show here