J-Tech Digital 4k 2x2 4K60Hz HDMI Video Wall Controller Multiviewer Seamless Switch Matrix | 4K60Hz Input and 4K30Hz Output, Supports HDMI, HDCP, RS-232, LAN, Downscale & Upscale, Web Control

Second edit: I contacted the company about the problem and they were going to immediately send me a new one and I was supposed to get it by a certain date. Days and it was never sent out. Then they were going to overnight it. I didn’t get it overnight. I got it, three days later than what they promised.. I installed the new one today. It worked on one TV with a picture, but I didn’t even bother with a second TV to see if I got a picture because the sound didn’t work, I called them again today.. The one that I received today wasn’t the same as the one that I was trying to replace it was from a sister company. They are going to try to replace it, but I’m not sure which one if I’m getting from Service or the sister company which had a plug that was too big for my power strip, and I really had to waste plug space because of it. They can’t overnight it The second replacement I’m not really very happy with his company. They’re going to send it by ground.Edit. I purchased this May 17, 2024 and today is August 4, 2024 and it died today. I’m very unhappy. I hope it has a warranty longer than 2 1/2 months, And I hope it can be replaced quickly.I purchased another highly rated unit. It didn’t work at all and their customer service was nonexistent. This unit worked perfectly. It was easy to set up. I have a TV and cable box in my living room, and my bedroom shares the same wall, it just seemed crazy to pay for another Cable box. I bought a long HDMI cable and put the splitter in.. I bought a splitter along time ago, that eventually died, so I could watch TV in my bedroom. I can change the channel with the remote app in my phone. If I want to watch TV in the bedroom while I’m working around the house as well as in the living room, I can do that. I also can watch TV in bed and have the TV in the living room turned off. It’s great and works perfectly!

I use this on a NVR to split the video to a 4k TV and a 1080p portable display. And it works flawless. No issue with audio or video quality.

You can duplicate displays, but you can't extend themI recently tested the J-Tech Digital HDMI Splitter, which features a 1 input and 2 output configuration. Note that the splitter does not come with an HDMI cord, so I used my own. I didn't realize that this splitter wasn't able to split to three monitors. During my testing, the device successfully extended signal to my second monitor without any issues. However, when I tried to connect a third monitor, the splitter only duplicated the display from the second, rather than extending the desktop. This means that I could only view the same content on both outputs, which isn't what I needed for my multi-monitor setup. So, if you want to expand your workspace across multiple monitors where each screen displays different content (for instance, setting up displays 1, 2, and 3), this product may not be the best fit for you. That said, it might work well for someone with needs more aligned with duplicating displays. Overall, while the splitter performed reliably, it simply didn’t meet my expectations for extending my desktop across multiple monitors.

Finally, a device that actually passes through the signals the way they’re meant to be. I’ve bought other devices on Amazon that claimed to be 4K Dolby Vision but then they mess up the audio. This device not only passes Dolby Vision HDR 10 but passes all of the digital audio as it receives it. Specifically I was looking for LPCM pass-through to my amplifier. The other ones would butcher up the signal of this one passes it all the way through. Haven’t tried the other supported audio for him as but claims to do a lot of high and audio formats.

Wanted to stream my Roku to two different TVs in my basement. This worked perfectly. The only hiccup was that the splitter needs its own power supply and I was out of spots on my power strip. Once I sorted that, I plugged the splitter into the power supply, then plugged the Roku stick into the input side of the splitter, then lastly plugged two HDMI cables I had into the splitter outputs and plugged the other end of the cables into my TVs. Viola - both now show what’s on the Roku simultaneously.

It works for me. I have two external monitors with different resolutions but most of the splitters sold here have to have the two external monitors the same resolutions. So read descriptions carefully. Also I plugged my earlier splitter into a modified sine wave power source on my directors cart and it fried the unit. It needs a pure sine wave.