OREI HDMI Switcher 4 in 1 Out with Quad Screen Multiviewer - Supports 1080p, DTS/Dolby Audio, IR Remote Control, Seamless Switching, Compatible with HDMI Devices

¡Muy satisfecho con la compra! El producto llegó en buen estado, cumple con lo que promete y la calidad me sorprendió para bien. Sin duda lo volvería a comprar.

I needed a 4K multiviewer to watch data channels and tracker data for F1 races. This box allows pretty much all combinations of screen outputs from 1,2,3 or 4 screens which is independent on each output. Picture quality is great with no noticeable difference or lag from direct display.Several people have commented on no HDR support and I can confirm this - the two YouTube stats for nerds images from my 4K max fire stick show BT709 with the multiviewer vs full BT2020 direct. However, with this limitation, and the poor quality remote, the unit itself is really very flexible and functional. I saw a comment about stretched images but you can select 16:9 to correct this (see example images in full or 16:9 modes). To switch which hdmi input is the main screen, you need to go into the menu opts for that output, but it can be done (see menu image).Audio can be muted or selected from any feed or each output.For the price, this is excellent and only the lack of HDR is missing. However, HDR units seem to be many hundreds of dollars more. I would recommend.

This unit is a good example or great functionality but a user interface that could be better. I will talk about the overall summary and the different modes. Let’s start with the good:- unit is small, metal, well constructed- remote is easy to use- great for watching multiple videos or one video source and a desktop source- very little lag- no frame loss that I can tell (streaming video)- Switching is nearly instant- Several modes/layouts- Remote covers all functions and a few extras like power and resolution.- price is good for what you getNot so good:- it stretches sources so text in particular may not be readable- power light is on all the time and is very bright- physical buttons are labeled oddly. “Audio” does what it says—switches audios sources—but it also has a hidden feature that if you hold it down the source text toggles on or off. “Main” changes source order for modes that support that—label makes no sense. “Mode” changes layout—not very clear but better than “main.”- Monitor will never sleep unless you turn the switcher off- You can only turn it off via remote. There is no auto off.- On screen source labels are either on or off (with audio button long press). I wish it would briefly show you the source or else have lights on the unit.- Remote provides direct audio source controls but not direct video source controls. You have to keep pressing the Mode button on remote or unit to cycle through video sources.Onto the modes/layouts. When I talk about text I just pulled up a Google search in Chrome.Full Screen ModeResolution is great. Not much else to say. Works like you think.2x2 ModeAll four sources scaled. Positions are fixed. Text unreadable but it is good for monitoring changes or multiple videos. You can read it if you scale to 175% or more.Side-Center ModeThis gives you 2 larger scaled views in the middle and two very stretched views on the sides. The side views are pretty useless but the center ones are good since it is the largest you can show 2 sources without stretching. Text is barely readable. Positions are fixed so only inputs 2 and 3 can be in the middle.1x2 ModeTwo inputs side-by-side. You can show inputs 1+2 or 3+4, no other combinations. Text is more readable but you still need to scale it up to 150-200% to work on it. Both are stretched vertically.1 + 3x1 Mode1 large square screen and 3 scaled small screens. This is my favorite because the large screen, while slightly stretched vertically, is usable. Scale to 150% and it is very clear. The other three are good for video or monitoring something. You can cycle any source to be the large screen. It rotates around: 1234, 2341, 3412, etc.

Being able to split screen multiple channels is great! I use it mostly for sports, to be able to watch multiple games, but it was also useful for watching election day/week coverage this year. I have multiple Tivo Minis, so it's easy for me to tune in multiple channels and/or recorded shows and push them to the particular part of the screen I want. I find myself only using two of the modes the vast majority of the time. It is either the 4-way split with a screen in each corner displaying the normal aspect ratio, or it's the 4-way split with the 2nd/3rd screens in the middle on the top/bottom with a normal aspect ratio, and the 1st/4th screens in tall pillars at the left/right (since these are stretched vertically and unwatchable, I just turn those two screens off) and this becomes my favorite 2-way split view. Occasionally I'll switch to the full screen view, but if I'm going to just a single screen I'll usually just switch to my input with my regular Tivo instead as the full screen view doesn't seem as sharp and full resolution. I'm not certain if that's due to the device itself or if it's due to my cables and setup, but for my use case, the full screen view isn't that important to me. The other possible views all seem compromised to me with them either squashing the aspect ratio vertically or horizontally for some of the screens, so I don't use them normally. Depending upon your use case, they might be useful.Edit: After learning in another review how to switch it from "stretch to fill" to "maintain aspect ratio" (press and hold the Mode button on the front of the unit), all the view modes are now useful, and this unit is even better!