Vizio M21d-H8 vs VIZIO SB4451-C0 review

Votes 1 1
Rating 5 5

Vizio M21d-H8 vs VIZIO SB4451-C0 comparison chart

Vizio M21d-H8 vs VIZIO SB4451-C0 review

Vizio M21d-H8
vs
VIZIO SB4451-C0

l would like to share my experience after comparing and testing two soundbars – Vizio M21d-H8 vs VIZIO SB4451-C0. The Vizio M21d-H8 was rated 5, while the VIZIO SB4451-C0 has a rating 7.2. The soundbars are equipped with a different number of buttons, power, volume down, volume up, source, Bluetooth for the M21d-H8 and power, input, Bluetooth, volume down, volume up for the SB4451-C0.

Audio features

Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that M21d-H8 has 2.1 and SB4451-C0 has 5.1. A built-in subwoofer is available only in the Vizio M21d-H8. Rate 5 out of 10 received the Vizio M21d-H8 for audio features and specs, but the VIZIO SB4451-C0 received 8 out of 10. The SB4451-C0 can play audio from Spotify.

Connectivity

Wireless Internet connection is realized only in the SB4451-C0. Soundbars from this comparison have Bluetooth support. There are 1/1 HDMI inputs/outputs in the Vizio M21d-H8 versus 1/0 HDMIs in the VIZIO SB4451-C0. As in the M21d-H8, so in the SB4451-C0 there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. We rated the connectivity of the M21d-H8 at 6 out of 10, while the SB4451-C0 was rated 8/10. The manufacturer of the SB4451-C0 provides a device control application. The Vizio M21d-H8 equipped with a microphone. The VIZIO SB4451-C0 may become part of a multiroom system.

Multichannel surround

Dolby Atmos audio decoder support is not implemented in either the M21d-H8 or SB4451-C0. Devices from this comparison cannot process surround sound due to lack of DTS:X. The M21d-H8 was rated 5/10, while the SB4451-C0 received a mark of 4/10 for multichannel surround.

Advantages Vizio M21d-H8 over VIZIO SB4451-C0

  • Built-in subwoofer
  • Microphone

Advantages VIZIO SB4451-C0 over Vizio M21d-H8

  • Separate subwoofer in package
  • Amazon Music compatible
  • Spotify support
  • WI-FI enabled
  • App control
  • Multi-room support
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Common

Product

Vizio M21d-H8
VIZIO SB4451-C0

Model

M21d-H8
SB4451-C0

Brand

Vizio
VIZIO

Reviews

4
123

General

Placement type

table-top, wall-mountable
table-top, wall-mountable

Connection to source

wired, wireless
wired, wireless

Soundbar buttons

power, volume down, volume up, source, Bluetooth
power, input, Bluetooth, volume down, volume up

Audio features

Built-in channels

2.1
5.1

Amplification type

active
active

Output power, W

Separate speaker (in package)

0
2

Separate speaker connections

has not
wireless

Subwoofer

Built-in subwoofer

Separate subwoofer (in package)

Separate subwoofer connections

wireless

Streaming services

Apple Music (AirPlay)

AirPlay

Amazon Music

Spotify

Other streaming services

has not
VIZIO SmartCast

Connectivity

WI-FI

Bluetooth

Ethernet (RJ45)

0
1

NFC

HDMI input/output

1/1
1/0

HDMI ARC

HDMI eARC

HDMI CEC

Optical digital input/output

1/0
1/0

USB

1 (USB 2.0)
1 (USB 2.0)

Coaxial digital input/output

0/0
1/0

Analog audio input/output (RCA)

1/0
1/0

Headphone output

0
0

Subwoofer output

0
0

Features

Voice control

Amazon Alexa, Google Assistant, Siri

App control

Microphone

Remote control

Multi-room

Multichannel surround

Dolby Atmos

Dolby (other)

Dolby Digital
Dolby Digital

DTS:X

DTS (other)

DTS Virtual:X
has not

User manual

Manual

N/A

Dimensions

Size (Wx H x D), cm/in

98 x 11.4 x 18.8/39 x 5 x 7
111.7 x 7.6 x 7.6/44 x 3 x 3

Weight, kg/pounds

3/6
4.5/10.8

Other

Release year

2020
2016
Vizio M21d-H8
VIZIO SB4451-C0
Vizio M21d-H8
VIZIO SB4451-C0

Soundbars SoundStrokes Art comparison rating

  • better
  • worse
  • 5
  • 7.2
  • 5Vizio M21d-H8
  • 7.2VIZIO SB4451-C0