When you purchase through affiliate text and image links on Seeking Tech, we may earn a commission.

Amazon Fire TV 4-Series vs. Amazon Fire TV Omni Series

The Fire TV 4-Series and Fire TV Omni Series are two television sets released by Amazon in 2021. So, what are the main differences between these TVs?

You can find out in this comparison guide.

Quick Summary

When compared to the Amazon Fire TV 4-Series, the Amazon Fire TV Omni Series exclusively offers hand-free Alexa voice controls and two-way video calling over Alexa.

The 65” and 75” screen sizes of the Fire TV Omni Series are also the only sets out of this group to support the Dolby Vision HDR format.

So, if you are interested in any of the aforementioned features, then we recommend picking up the Omni Series.

If the Omni-exclusive features don’t interest you, then the Fire TV 4-Series is the more affordable option.

You can purchase either of these television sets, if you are interested, on Amazon with the following links:

You can also check out our wall mount buyer’s guides for the Fire TV 4-Series with this article and the Fire TV Omni Series with this link.

Fire TV 4-Series vs. Fire TV Omni Series Comparison Chart

You can take a look at Seeking Tech’s comparison table for the Amazon Fire TV 4-Series and Amazon Fire TV Omni Series below.

 Amazon Fire TV 4-Series 4K UHD Smart TVAmazon Fire TV Omni Series 4K UHD Smart TV
Screen Sizes43”

50”

55”
43”

50”

55”

65”

75”
Model Numbers43” Amazon Fire TV 4-Series: 4K43N400

50” Amazon Fire TV 4-Series: 4K50N400A

55” Amazon Fire TV 4-Series: 4K55N400A
43” Amazon Fire TV Omni Series: 4K43M600A

50” Amazon Fire TV Omni Series: 4K50M600A

55” Amazon Fire TV Omni Series: 4K55M600A

65” Amazon Fire TV Omni Series: 4K65M600A

75” Amazon Fire TV Omni Series: 4K75M600A
Dimensions with Stand43” Amazon Fire TV 4-Series: 38.1” x 22.3” x 3.5”

50” Amazon Fire TV 4-Series: 44.2” x 25.6” x 3.5”

55” Amazon Fire TV 4-Series: 48.7” x 28.3” x 3.5”
43” Amazon Fire TV Omni Series: 38” x 22.6” x 3.6”

50” Amazon Fire TV Omni Series: 44.1” x 25.5” x 3.6”

55” Amazon Fire TV Omni Series: 48.6” x 28.5” x 3.6”

65” Amazon Fire TV Omni Series: 57.1” x 33.3” x 2.9”

75” Amazon Fire TV Omni Series: 65.9” x 38.2” x 3.0”
Weight without Stand43” Amazon Fire TV 4-Series: 15.5 lbs.

50” Amazon Fire TV 4-Series: 20.6 lbs.

55” Amazon Fire TV 4-Series: 25.0 lbs.
43” Amazon Fire TV Omni Series: 15.5 lbs.

50” Amazon Fire TV Omni Series: 20.8 lbs.

55” Amazon Fire TV Omni Series: 25.0 lbs.

65” Amazon Fire TV Omni Series: 42.5 lbs.

75” Amazon Fire TV Omni Series: 62.2 lbs.
Finish Color43” Amazon Fire TV 4-Series: Black

50” Amazon Fire TV 4-Series: Black

55” Amazon Fire TV 4-Series: Black
43” Amazon Fire TV Omni Series: Black

50” Amazon Fire TV Omni Series: Black

55” Amazon Fire TV Omni Series: Black

65” Amazon Fire TV Omni Series: Metallic Silver

75” Amazon Fire TV Omni Series: Metallic Silver
What’s in the BoxFire TV 4-Series

TV stand (2 legs)

Power cord

4 screws

Fire TV Alexa Voice Remote

2 AAA batteries

Quick Start Guide
Fire TV Omni Series

TV stand (2 legs)

Power cord

IR emitter cable

4 screws

Fire TV Alexa Voice Remote

2 AAA batteries

Quick Start Guide
Display TypeDirect LEDDirect LED
HDMI Ports1x HDMI eARC 2.1 port

3x HDMI 2.0 port
1x HDMI eARC 2.1 port

3x HDMI 2.0 port
Refresh Rate60 Hz60 Hz
HDR10 SupportYesYes
HLG SupportYesYes
Dolby Vision Support43” Amazon Fire TV 4-Series: No

50” Amazon Fire TV 4-Series: No

55” Amazon Fire TV 4-Series: No
43” Amazon Fire TV Omni Series: No

50” Amazon Fire TV Omni Series: No

55” Amazon Fire TV Omni Series: No

65” Amazon Fire TV Omni Series: Yes

75” Amazon Fire TV Omni Series: Yes
Audio Power8W + 8W8W + 8W
Audio SupportDolby Digital Plus with Dolby-encoded audio passthroughDolby Digital Plus with Dolby-encoded audio passthrough
Ethernet1x Ethernet port1x Ethernet port
USB1x USB port1x USB port
Operating SystemFire TV OSFire TV OS
Press and Ask Alexa SupportYesYes
Hands-Free with Alexa SupportNoYes
Two-Way Video Calling with Alexa Communications SupportNoYes
Accessibility FeaturesAudio Description

Closed Captioning

Screen Magnifier

Text Banner

VoiceView Screen Reader
Audio Description

Closed Captioning

Screen Magnifier

Text Banner

VoiceView Screen Reader
Warranty and Service1-year limited warranty and service

Optional 3-year or 4-year extended warranty for U.S. customers
1-year limited warranty and service

Optional 3-year or 4-year extended warranty for U.S. customers
PricingCheck price on Amazon.Check price on Amazon.

Screen Sizes

When compared to the TV 4-Series, the Omni Series comes in two bigger screen sizes.

You can check out the available size options for both TVs below:

Amazon Fire TV 4-Series:

  • 43”
  • 50”
  • 55”

Amazon Fire TV Omni Series:

  • 43”
  • 50”
  • 55”
  • 65”
  • 75”

Model Numbers

You can check out the model number for each screen size of both television sets below:

  • 43” Amazon Fire TV 4-Series: 4K43N400
  • 50” Amazon Fire TV 4-Series: 4K50N400A
  • 55” Amazon Fire TV 4-Series: 4K55N400A
  • 43” Amazon Fire TV Omni Series: 4K43M600A
  • 50” Amazon Fire TV Omni Series: 4K50M600A
  • 55” Amazon Fire TV Omni Series: 4K55M600A
  • 65” Amazon Fire TV Omni Series: 4K65M600A
  • 75” Amazon Fire TV Omni Series: 4K75M600A

Dimensions with Stand

You can find the dimensions of these Amazon Fire TVs, without the inclusion of the stand, below:

  • 43” Amazon Fire TV 4-Series: 38.1” x 22.3” x 3.5”
  • 50” Amazon Fire TV 4-Series: 44.2” x 25.6” x 3.5”
  • 55” Amazon Fire TV 4-Series: 48.7” x 28.3” x 3.5”
  • 43” Amazon Fire TV Omni Series: 38” x 22.6” x 3.6”
  • 50” Amazon Fire TV Omni Series: 44.1” x 25.5” x 3.6”
  • 55” Amazon Fire TV Omni Series: 48.6” x 28.5” x 3.6”
  • 65” Amazon Fire TV Omni Series: 57.1” x 33.3” x 2.9”
  • 75” Amazon Fire TV Omni Series: 65.9” x 38.2” x 3.0”

Weight without Stand

You can also check out the weight specifications for all screen sizes, without the stand attached, for both Amazon products below:

  • 43” Amazon Fire TV 4-Series: 15.5 lbs.
  • 50” Amazon Fire TV 4-Series: 20.6 lbs.
  • 55” Amazon Fire TV 4-Series: 25.0 lbs.
  • 43” Amazon Fire TV Omni Series: 15.5 lbs.
  • 50” Amazon Fire TV Omni Series: 20.8 lbs.
  • 55” Amazon Fire TV Omni Series: 25.0 lbs.
  • 65” Amazon Fire TV Omni Series: 42.5 lbs.
  • 75” Amazon Fire TV Omni Series: 62.2 lbs.

Finish Color

When it comes to the finish color, the 43-inch, 50-inch, 55-inch versions of the Amazon Fire TV 4-Series and Amazon Fire TV Omni Series are black.

The 65-inch and 75-inch versions of the Amazon Fire TV Omni Series are metallic silver.

What’s in the Box

In addition to the actual television set, both products also come with a stand, power cord, Fire TV Alexa Voice Remote, two AAA batteries for the remote, four screws and a quick start guide.

The Omni Series is the only one of these two TV to include an IR emitter cable.

You can check out a breakdown of the content included with each new retail box for these products below:

Amazon Fire TV 4-Series:

  • Fire TV 4-Series
  • TV stand (2 legs)
  • Power cord
  • 4 screws
  • Fire TV Alexa Voice Remote
  • 2 AAA batteries
  • Quick Start Guide

Amazon Fire TV Omni Series:

  • Fire TV Omni Series
  • TV stand (2 legs)
  • Power cord
  • IR emitter cable
  • 4 screws
  • Fire TV Alexa Voice Remote
  • 2 AAA batteries
  • Quick Start Guide

Display Type

When it comes to the display type, both of these screens are Direct LED.

HDMI Ports

The Fire TV 4-Series and Fire TV Omni Series are equipped with the following HDMI inputs:

  • 1x HDMI eARC 2.1 port
  • 3x HDMI 2.0 port

Refresh Rate

Both television sets in this comparison also have a refresh rate of 60 Hz, which mean that they are capable of displaying video signals at up to 60 frames per second.

HDR10

The Amazon Fire TV 4-Series and Fire TV Omni Series support the HDR10 format.

HLG

These 4K televisions are also compatible with the HLG format.

Dolby Vision

Only the 65-inch and 75-inch screen sizes of the Amazon Fire TV Omni Series support the Dolby Vision format.

Audio Power

The audio output power is the same for both TVs at 8W + 8W.

Audio Support

When it comes to audio compatibility, both of these television sets support Dolby Digital Plus with Dolby-encoded audio passthrough.

Ethernet

These new Fire TVs each comes with an Ethernet port if you want to connect to the internet over a wired connection.

USB

A USB port is also included with the Fire TV 4-Series and Fire TV Omni Series.

Operating System

For the operating system, these smart television sets use the Fire TV OS.

Press and Ask Alexa

Both products come with support for the press and ask Alexa feature as you can enable Alexa voice controls with the touch of a button.

Hands-Free with Alexa

The Fire TV Omni Series is the only one out of these new Amazon televisions to provide hands-free voice controls with Alexa.

Two-Way Video Calling with Alexa Communications

The Fire TV Omni Series is also the only product in this comparison to feature two-way video calling over Alexa.

Accessibility Features

Both television sets offer the following accessibility features:

  • Audio Description
  • Closed Captioning
  • Screen Magnifier
  • Text Banner
  • VoiceView Screen Reader

Warranty and Service

The Amazon Fire TV 4-Series 4K UHD Smart TV and Amazon Fire TV Omni Series 4K UHD Smart TV each comes with a 1-year limited warranty and service. U.S. customers can also purchase an optional 3-year or 4-year extended warranty.