Sewell Active 4K HDMI Splitter

1x2 HDMI Splitter, 4K Resolution, Built-in Booster, 3D, HEC, ARC support

Sewell Part # SW-23500

List:  $29.95  | Save 43%


4.7 (432 reviews)

In Stock

"The entire process was perfect - good price, good quality, good service, quick delivery."


Important Notes about HDCP: 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 Splitter. In addition, the HDMI 2.0 splitters also support 4K 60Hz 4:4:4.

Splitters vs. Switches

This HDMI splitter will duplicate a single HDMI source on two HDMI displays. This is also sometimes called mirroring. Both displays will show the same video and audio simultaneously, whereas an HDMI switch is very different. A switch on the other hand will take multiple sources and allow you to choose which single source will be displayed on the TV. Watch this quick video to learn about the difference between the two.

To summarize, this HDMI splitter lets you take one HDMI source and send the same video simultaneously to multiple screens. If you are interested in using multiple HDMI sources with one HDMI screen, check out our IBIS 2x1 HDMI switch.

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. 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.

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.

HDMI Splitter Diagram

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.

100 Ft. Distance Test with this Splitter

In the video below we show off the distance limitations of our HDMI cable and HDMI splitter using 50 feet of cable between the splitter and the video source, and 50 feet between the splitter and the display (typical HDMI specs limit the signal to 16 feet only).

HDCP Support

Perhaps one of the most important features of a high quality HDMI splitter is HDCP support. HDCP (High Definition Content Protection) not only protects the content from being pirated, but ensures that the content makes it unaltered to the display as long as the rest of your hardware is set up properly.

NOTE: Does not work with HDCP 2.2

High Quality Construction

Wire gauges and the high quality construction of this splitter allows for an operating frequency of 225MHz. HDMI 1.3b and 1440p resolutions are supported, future proofing you from many years of future HDMI development. The heavy-duty cool metal enclosure protects the insides and keeps the unit cool by aiding in quick heat absorption and dissipation.

Package Contents

HDMI Splitter (v1.4)
5V Power Supply
User Manual

If you need more cables or a different length, view our HDMI Cable selection.


Mfg. Part Number

  • SW-23500


  • Sewell


  • 2 x HDMI Outputs supporting up to v1.4 and 4K
  • 1 x HDMI Input supporting up to v1.4 and 4K

Supported Audio

  • LPCM, Dolby-AC3, DTS7.1, DSD/Dolby TrueHD/DTS-HD master audio
  • Essentially all available audio options are supported

Video Format

  • Deep Color
  • 480i/ 576i/ 480p/ 576p/ 720p/ 1080i/ 1080p/ 1440i/ 1440p / 4K
  • 3D Support at 1080p/24Hz
  • 4K at 30 Hz max.

EDID Duration

  • 4 seconds max.


  • If you are not getting audio through the splitter but are getting video check out our HDMI Splitter Troubleshooting Guide.


432 Total Reviews -

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(361) 83.56 %
(45) 10.42 %
(12) 2.78 %
(7) 1.62 %
(7) 1.62 %

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Most helpful reviews

Audio Split Issue

Egg - 12/29/2010 7:17:28 AM

7 found this review helpful

Pros: Works as advertised! Picture on both TV's is perfect. One has a 50 foot HDMI cable running to it and works fine! Lowest price for this type of product I could find. "Best Buy" version is $99.00 !!!

Cons: The specs discuss the splitter will split the signal based on the lowest resolution TV connected to it. This was not an issue for me seeing both TV's were 1080P capable. The problem I had was the audio side of the signal. I have a 5.1 Surround Receiver connected to one side and just a TV (just 2 speakers) connected to the other. If the splitter sent the 5.1 audio to the TV then I received no audio on the TV without surround. If I switched it around and sent the 2.0 audio, I received audio on the TV but lost 5.1 surround on the receiver. So, the splitter had to be set up to split the 2.0 audio signal and not the 5.1. The only other issue I have is the very bright LED's!

Other: Not a big deal, fortunately I was able to use another 5.1 connection from the cable box to the receiver so I can enjoy 5.1 surround sound on the receiver and 2.0 audio on the other TV! Highly recommend this product.

Just ok......

Anonymous - 3/16/2010 11:53:21 AM

7 found this review helpful

Pros: Cheap and does work.

Cons: Will not work splitting cable box to 2 a/v receivers unless both receivers are on. Turn 1 off, pic goes blank.


HDMI 1X2 Splitter

5of15 - 5/28/2010 6:21:51 AM

6 found this review helpful

Pros: Good, quality construction, compact, operates exactly as it's supposed to do at a great price.

Cons: Integrated onboard power supply would have been nice rather than the external one supplied. However, works well

Other: I would/will buy again. Highly recommend and Sewell shipping was very fast.

See all reviews

Most recent reviews

Works with everything!

Bill - 9/26/2016 6:24:05 AM

+ Small form factor + Solid construction + LED lights indicate correct signal transmitted - very useful for more unusual applications + Power adapter included + Works with everything I've thrown at it. Standard cables, HDMI to Ethernet transmitter adapters, and even VGA to HDMI adapters

Awesome Piece!

Mike2011SS - 9/26/2016 5:13:40 AM

Works perfectly. Split your HDMI to TVs in different rooms.

10 stars if there were so many

deank - 9/19/2016 9:08:22 PM

amazing product, price and company. Quick shipment, great email communication...HIGHLY RECOMMEND


Ikilzu - 9/3/2016 1:44:27 PM

Work how I need it as a streamer. Strips HDCP and easy to set up.

Upper Echelon

Tee - 8/29/2016 11:51:35 AM

No picture quality lost, quick change when source is selected, can use long hdmi cables with no problems, small size, very durable!


See all 7 questions


What if my displays are different sizes?


The splitter will send the lowest common resolution to both displays. The splitter has to send the exact same signal to both displays, and defaults to the lowest common denominator so that both displays will work. That means if you have a 1080p television and a 720p television both will get a 720p signal from the splitter.

8 out of 9 found this helpful.

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Do both displays need to be on at the same time?


No. Televisions will generally continue to send a standby signal even when they’re turned off. You can watch on either television, or both, without worrying about changing your setup.

6 out of 7 found this helpful.

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Do both displays need to be televisions?


No. This HDMI splitter works with any HDMI device. That means it will work just fine with televisions, projectors, AVRs, video processors, capture cards, etc.

5 out of 6 found this helpful.

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Sewell Active 4K HDMI Splitter, 1x2 HDMI Splitter, 4K Resolution, Built-in Booster, 3D, HEC, ARC support