4K HDMI Multiviewer 4X1 with IR Remote 4 Channels Screen Divider 4HDMI Input 1 Output Seamless Switch Supports 4K@60Hz(YUV)/4K@30Hz(RGB)/1080P Full HD HDCP1.4 5 View Modes 1×1 2×2 1＋3 etc

As a tech with over 30 years in the industry, I’ve seen a lot of HDMI splitters and multi-viewers come and go—but this 4-in-1 HDMI adapter really delivers where it counts. I’ve got it hooked up to my 75” TCL TV and it works exactly as advertised. I tested it with multiple sources, including a desktop PC, a cable box, and a gaming console, and I’m impressed with how smoothly it handles all of them. Setup was straightforward. The unit was recognized quickly by my PC, and within seconds I was running extended displays and multiple video feeds without any noticeable lag or audio sync issues. The 4K output looks great on the TCL—no loss of video quality going through this box. Even when the screen is split into two or four feeds, the image remains sharp and watchable. One of the standout features is the included remote, which makes switching inputs and audio sources effortless. You can cycle through different viewing modes—single view, dual split, full quad, or one large with three smaller screens. My only real gripe is that the “one large and three small” mode stretches the main image awkwardly, instead of preserving the native aspect ratio. There's definitely room on screen to do this better, so hopefully a future firmware update fixes it. Another nice touch is the solid metal housing—it stays cool even under extended use, and feels like it’s built to last. The only minor annoyance is the power cable: it's a short USB-A to USB-C. Easily fixed with a longer cable, but worth noting. Bottom line: if you’re looking to consolidate multiple HDMI inputs into a single TCL screen, this unit is an outstanding value. It’s responsive, versatile, and the video quality holds up beautifully. Highly recommended for multitaskers, gamers, and anyone who wants more out of their screen real estate.

My husband is addicted to technology and I have given him this excellent 4K 4X1 HDMI Multivisor with SIGRAPID remote IR 4 HDMI display splitter in 1 output seamless switch 1 4-way screen supports 4K @60Hz (YUV) /4K @30Hz (RGB) /1080P Full HD HDCP1.4 5 view modes 1×1 2×2 1+3

First off: This does what it says it does, and it does it well. Different signals, both 1080p (camcorder) and 4k AppleTV box (to 4K HD TV) were output to this device. It was fast with display after plugging in, and the image/sound was clear. It also doesnt seem to suffer from plug-in order of inputs like so many of these switch/splitter like devices do. You can also choose to downgrade a 4k signal to 1080p ****edit**** When coming back after 24 hours, the sound output from my apple tv was no longer passing through. I had video, but no sound. Had to unplug and replug the multiplyer to get sound back. So, with the aspect ratio issues (discussed after edit) and now the sound issue, I have to drop my review from 4 stars to 3. Sorry guys (developers), fix these two issues, and this is a four. Add picture in picture and make the remote sensible, and you have a 5 star. Back to the drawing board. ****end edit**** CONS -However, areas where this doesn't perform well is aspect ratio. I have no control over ratio it seems, and the instructions give next to no guidance on the operation of this device. For whatever reason, it will squish or stretch your image out depending on how you have it placed on the screen. This seems to impact the primary image mostly. -The remote is confusing. It is nice you can move other inputs into the primary position, but the remote and actual switches on the device are so convoluted, it leaves you to trial and error. PROS -My LG TV has some builtin functionality to do the same thing as this Multiviewer, but it is hit and miss and slow. For whatever reason, the LG only works in specific input video combinations, and struggles with hi resolution. If it doesnt like the input combination, it just refuses to show the image(s). Black screen on one or both images. And you only get two multiviews. This Multiviewer is much more reliable and faster. However, the LG did maintain correct aspect ratios. -Fast input response without issues with input order -Clear picture and sound -downgrade a 4k signal to 1080p -Dont need 4 inputs plugged in. Manual says you will get colour bars if no signal, but this is not actually the case. No signal, no output box on screen at all. Thoughts: So this isnt an advertised feature, so no points off. But if I was to actually pay for a device like this, I would like some picture-in-picture options. This doesn't seem to do picture in picture at all, so you will never be able to maximize the main input while showing 1 or more of the other inputs. But at least you can make any input full screen. Although again, that is confusing on the remote to figure out (simply the 1,2,3,4 buttons. They take up a lot of space on the remote and that's all they seem to do).

The SIGRAPID 4K HDMI Multi viewer 4X1 is an item I was hopping to love and was skeptical about the other review being wrong. I received the item and immediately set it up with 4 devices. At first glance everything looked great, all 4 video device being displayed on the screen. I then cycle through all the different view layouts and that seem good as well. I then tried to go full screen so I hit the number 1 and cycle through the numbers all the way to 4. On the first attempt the screen began to freeze. I then hit the mode button to return to the 4 screen layout but it changed to 2 screen. I continue to cycle through until I reached the 4 screen view. Once I manged to get a full screen on video on input 1 I had audio but it was for one of the other inputs. I hit the audio change button and nothing happened. Long story short you need to change back to the 4 screen view to change the audio. I then hit 1 again and had the correct audio. I then switch to input 2 but still had the audio for input 1. Some times the audio follow the change of video while on full screen and sometimes it does not. This device is full of bugs and for me is not worth the headaches. I will be returning the item. The screen freeze while switching inputs and you need to change to another input or go back to 4 screen view to fix it. The audio does not always follow the video input change / selections. Changing modes always make you cycle trough all available layouts before you can get back to the 4 view. If you go full screen and want to go back to the full view the only way if to cycle through all layouts which means about 5 button hits. Again I really wanted to like this device as I been eyeing a few type of this devices for a bit but it has way too many glitches / bugs for me. The vendor will needs to make improvement and or firmware updates for this product to then be ready for mainstream use. At this ticket I would classify this item as being in beta / development stage.

This multiviewer works very well for displaying multiple HDMI sources on a single monitor or TV. The picture is clear and switching between the different viewing modes is quick and straightforward. The 2×2 layout is especially useful for monitoring four devices at once, while the other layouts provide added flexibility. The IR remote is convenient, and setup is essentially plug-and-play. A great option for anyone who needs to view multiple HDMI sources on one display.