Sewell 8-port 4K HDMI Splitter

1x8 Distribution Amplifier, HEC, ARC, 3D, 4K-ready

Sewell Part # SW-29446


4.3 (11 reviews)

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Note: Sewell HDMI Splitters are all HDCP compliant which means that this splitter does not strip or bypass HDCP.

Also note that this splitter supports HDCP 1.x versions and the new HDCP 2.2 standard is not backwards compatible with HDCP 1.x versions. To future-proof yourself for HDCP 2.2, check out our HDMI 2.0 Splitters. In addition to supporting HDCP 2.2, the HDMI 2.0 splitters support 4K 60Hz 4:4:4.

8-port 4K HDMI Splitter

With our HDMI 1x8 Splitter you can take one HDMI source and split it between eight outputs simultaneously, allowing users to view eight duplicates of a single HDMI source on 8 displays (also called 'mirroring'). Also known as a 1x8 HDMI Splitter, this provides a high quality digital reproduction with no distortion and is very easy to use.

HDMI 1.4 vs HDMI 2.0

This HDMI splitter supports HDMI v1.4. For HDMI 2.0 support, check out our SplitDeck HDMI splitters.

The main attraction to HDMI v2.0 is 4K 60Hz support which is a big improvement over v1.4's 4K 30Hz standard which this splitter supports. Improving frame rate at first might not seem like such a big deal, but twice the video bandwidth is required since it is sending twice the number of frames per second. So is doubling the frame rate worth it?

4K 30Hz vs 4K 60Hz

As our TVs get bigger and bigger, so does the perceived difference between refresh rates. This splitter supports 4K 30Hz while our SplitDeck HDMI Splitter Series supports 4K 60Hz, but why should you care?

As you know, video is simply a bunch of images played rapidly to give the illusion of movement. More images viewed per second equates to more-realistic video. Refresh Rates (measured in Hz) are what is used to describe the number of unique images played per second. 30 Hz means that you're seeing 30 unique images per second while 60Hz doubles the amount of images per second.

But Wait -- I thought the human eye couldn't detect individual frames much past 24 frames per second. -- That is technically true; the human eye is thoroughly convinced that they are seeing a moving image even at 24 Hz. Higher Hz rating actually makes fast-moving objects look more realistic and less blurry/jumpy.

Battling Motion Blur -- One of the outcomes of having a low Hz rating is that fast-moving objects start to look blurry. This is actually a feature of your display-- it is trying to compensate for the jarring nature of jumpy image animation. A football travelling 30 yards/second would technically only show one frame per yard when seen at 30Hz, making that throw seem unrealistic to our eyes. The TV must therefore employ motion blur or ruin the viewing experience.

Motion blur is a lot less distracting than the actual jumpiness of an image, but neither motion blur nor jumpiness are desired when watching action flicks, playing a video game, or watching sports. For those types of video content, we highly recommend that you do not settle for 30Hz.

If you have a 1080p TV and a 720p TV, the signal sent to both from the splitter will end up being 720p unless you use a downscaler between the splitter and the 720p TV. That way, each TV will display the highest possible resolution.

HDMI Splitter Diagram

While only 2 displays are shown, a 1x8 HDMI Splitter works the same way, outputting to 8 displays instead of 2.

High Quality Construction

This HDMI 1x8 Splitter is loaded with the latest advanced technology capable of supporting all your equipment's latest features. This HDMI 1x8 Splitter provides full support for 3D, 4K and 1080p resolution, and 24/36 bit deep color. The high quality parts used in this product allow its users to operate at a frequency of 225MHz. The product also has a high quality, heavy-duty metal enclosure that protects all the inside parts and keeps the unit cool by helping with quick heat absorption and dissipation.


Our 1x8 HDMI Splitter is perfect for high definition digital signage and video mirroring. With the HDMI Splitter 1x8 you can save some serious time and money. Rather than paying for eight individual video sources you can get one HDMI 1x8 Splitter and only pay for one video source.

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Mfg. Part Number

  • SW-29446


  • Sewell


  • Up to 4K resolution. Supports 4K 30Hz, and 1080p at 60Hz, 720p, and other computer-specific resolutions
  • One HDMI input signal split and duplicated to eight HDMI devices
  • HDCP 1.x protocol compliant
  • Supports 3D
  • Supports CEC
  • Supports deep color 30bit, 36bit
  • Supports Blu-ray 24/ 50/60fs/ HD-DVD/ xvYCC
  • Digital audio format, as DTS-HD/ Dolby-trueHD/ LPCM7.1/ DTS /Dolby-AC3/DSD
  • Supports signal retiming
  • Supports input up to 15 meters AWG26 HDMI 1.3 standard cable length,
  • Outputs up to 25 meters AWG26 cable length
  • No loss of quality
  • Installs in minutes
  • Includes DC5V/3A power supply


11 Total Reviews -

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Most helpful reviews

Got two splitters

Anonymous - 6/17/2012 12:26:14 AM

2 found this review helpful

Pros: great product, easy to use

Cons: none


NO Brainer - 9/27/2011 7:46:01 AM

2 found this review helpful

Pros: easy plug and play

Cons: none observed

Other: Great cost effective splitter; it's a no brainer

1x8 HDMI Splitter, Powered

SSW - 2/9/2015 10:34:53 AM

1 found this review helpful

Pros: Works well. I have this splitter and a SW-28818 3x1 HDMI Switch set-up and running four TV's. Using Red Mere Cables with distances of 50', 30' and 15'. So far just installed and used 2 different input devices on the switch (DVR and laptop).

Cons: None so far just installed two days ago if I find any I will update.


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Most recent reviews


Gordon - 6/17/2016 7:56:07 AM

It worked like it says in the description. Haven't had any issues.


Denny - 6/16/2016 7:11:02 PM


6 down

- 2/18/2016 10:59:55 PM

It's very easy to use and get going

1x8 HDMI Splitter, Powered

SSW - 2/9/2015 10:34:53 AM

Works well. I have this splitter and a SW-28818 3x1 HDMI Switch set-up and running four TV's. Using Red Mere Cables with distances of 50', 30' and 15'. So far just installed and used 2 different input devices on the switch (DVR and laptop).

good buy

Anonymous - 6/22/2014 4:44:52 PM


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Sewell 8-port 4K HDMI Splitter, 1x8 Distribution Amplifier, HEC, ARC, 3D, 4K-ready