YAMAKASI O40USUT 40 Inch UHD / 4K Monitor (3840 x 2160) HDMI 2.0, UHD (60Hz), HDCP 2.2, MHL, 10Bit

EDIT 10/13/2020This monitor still works beautifully. I have begun looking into new monitors with faster refresh, HDR, etc., but wanted to say this Yamakazi has been and still is a delight in almost every way.EDIT 05/17/2016I have no complaints after almost 5 months of daily use. I want people to have the same happy experience. I read the one star reviews, and one person appears to have received a defective display, which should be returned.As for the folks who reject this display out of hand as a TV, rather than a monitor, I have to say that my understanding is that both start the same way.This screen was initially intended, and branded along the bezel, as a UHTV. We got lucky that this great display panel was “down” graded to “mere” monitor status. Essentially displays work as both TVs and monitors. It’s the wiring, components, and the display pixel properties that make the difference for how best they can be used.This is a monitor and I’m really happy with it.For those who can’t get crisp text or really good color calibration, on whatever monitor they are using, please take a look at the following links. I found this information very helpful and it should provide a good place to start learning about how you can improve your monitor’s display.Link: [...]Link: [...]Link: [...]Link: [...]Link: [...]It’s worth noting that our brains retain images, so give your eyes and brain a break of 10 or more minutes after a calibration change. Leave the monitor and come back later to see if the change works for you. For some people, I’ve read that it can take a day or more to reset the brain’s image setting.I won’t discuss how color blindness factors in, other than to say that people affected by this condition have a problem since “correctly” calibrated displays can look really wrong to them.If, after calibration, any monitor still doesn’t make you happy, check your computer components (GPU, CPU, power supply, etc.) to make sure you have the required equipment for your 4K display.As for text crispness, I wear tri-focal glasses and sit more than two feet from this screen. I easily read 10-point Calibri font at 100% standard screen size on this display.I love this monitor and wish you Good Luck finding what you will love.End Edit.*********IN BRIEF... I've only had this monitor up and working for a week, so I plan to update this review in a few months to share how it holds up and note what I learn about it.Initially, I thought 40" would be too big. Then, I noticed that a dual set up of 19" monitors (or larger) would be about the same width or wider. I have two 22"ers at my job. They are wider than this monitor. I made time to look at 40" HDTVs. It was the easiest way to start wrapping my head around buying one of these.I read discussions of people talking about font size and document scaling issues, but read that if you are OK with a 1080p HD monitor in the 24"-27" range, the size of what you see on them is only a little smaller than what you'll see on a 40" 4K monitor. This is true, but the 40” has tons more room for open documents and browser windows. I'm not doing any more resizing than I do on my monitors at work, which is hardly any.I can testify that watching videos, movies, and playing games is a life altering experience with this monitor. It’s put the AWE in awesome!If you have the space and have the PC power to make it work, you will make yourself happy AND be productive. I guarantee it! Get one. Get three! Go be happy!/btw, YAMAKASI has this in a 48" size, too. Can you believe it? I was so tempted.AT LENGTH: THE INTERESTING AND INFORMATIVE DETAILS... To push 60Hz refresh rates on a 4K monitor (regardless of size) requires there be either a DisplayPort version 1.3, or the latest HDMI version 2.0. Earlier versions only reach 30Hz which is just not good enough. This monitor has the latest 2.0 HDMI port, so 60Hz is covered.YAMAKASI’s 40" & 48" Monitors do not do NVIDIAs G-Sync or AMD's Free-Sync. It's possible a firmware update could change that, but it may never happen. This may be the main reason for competitive gamers to get a smaller monitor 24"-32" that supports one or the other, and which may have the potential for 144Hz refresh rates. If that matters to you, this won't be the monitor for you. If not, go with whichever GPU build you prefer and don't worry about it. Personally, I hope the protocols are merged and we eventually get a firmware update that supports both.It has HCDP 2.2 protocol which is the latest rational for media protection. *cough*hateit*cough* It future proofs this purchase, so it’s smart of YAMAKASI to include it. (-_-)My research indicates this is a SAMSUNG 'A' or 'A-' quality PVA3 panel. I don't know what the three stands for, except maybe that it's the latest version of their PVA panels. The screen has a light anti-reflective [AR] treatment, so it's neither dull nor shiny.The panel quality and the HDMI 2.0 port sealed the deal for me on this monitor, as PVA is comparable to IPS quality and that 2.0 HDMI connector is not wide spread for monitors of any size, at this time. Still, I do wish it had a DisplayPort 1.3, but that's just me being greedy since it's a better A/V protocol, but hard to find.I could not be happier with this monitor. It's terrific. I feel good recommending it based on my research and what I see in front of me. Just keep in mind that there are hardware requirements necessary for reaching smooth 4K output at 60Hz.Check out YouTube for videos about 4K computer builds. You may not want to build your own like I did, but you need to know the quality of the parts required to make this display show its true potential.The monitor arrived perfectly protected. It's original cardboard packaging was well sealed inside a nicely crafted wooden crate that about doubled its shipping weight. This didn't matter to me, since this purchase came with free shipping.On that point, there was an unexpected COD charge of $31 that had to be paid to UPS (by check or money order) before I could pick it up. I was told it was a Customs Fee of some sort. I brought this to the attention of RED TAB INC, the South Korean company that shipped it. They refunded that charge to my account. One of many Kudos to RED TAB! I don't know if this will happen to other buyers, but keep the possibility in mind and get a receipt.Speaking of weight, even though the crate is large, it only weighed about 50 pounds. I find that manageable, but still brought a friend and a dolly to UPS. This made moving it around easy. You can decide for yourself if you need that kind of help. The crate easily fit in the back of my '05 Subaru Forester.There's a set of arrows stamped on the box that point to the ”Top” side that should be pried off. All I needed was a largish flat head screw driver and a hammer. Gently work your way around the edge until all the nails are lifting out, then pull the side off. Be careful of the nails! I didn't have any real trouble, but be careful to not break the wood, in case you need to repackage for a return. The monitor is very well protected inside the wooden box.No big surprise. The Korean monitor came with a Korean manual and a Korean remote (with Korean batteries!). The manual has pictures and both the manual and the remote have some words are English, none the less, I don’t speak Korean. I asked RED TAB INC about this and they sent me a picture of the remote with an English translation for the Korean labeled buttons. RED TAB even posted that translation on Amazon’s product detail page, so everyone can use it.Kudos to RED TAB INC!Speaking of Korean, I was a bit concerned for how much trouble it was going to be to set the monitor's menu to English, but YAMAKASI did that courtesy before packaging the monitor.Kudos to YAMAKASI ! For what it's worth, I don't think it will be hard to find useful recommendations for configuring the Menu settings, online.I did find a problem during unboxing. Someone forgot to include the Korean "F" to North American "B" (grounded) power adapter plug. YAMAKASI sent a standard North American computer/monitor power cord by mistake, which is of no use with this monitor because its power cord is HARD wired into the back and can't be removed. I offered to return the cable, but RED TAB didn't care.See picture of plug I bought from a local luggage shop (*cough*Bergman'sLuggage*cough*).I talked to RED TAB about the missing adapter plug and they kindly refunded the cost of the one I purchased (about $10), so if something like this happens, don't forget to keep your receipt!RED TAB INC was great to deal with! They answered my many questions too, both before and after the purchase. Really excellent customer service!!Set up was a breeze. There are two curved pieces of metal for the feet, that attach to the flat bottom of the monitor with two Phillips head screws each. The flat bottom rests on the legs with perfect stability. It may be wrong, but I positioned the longer length toward the front of the monitor. It works. The touch points have little rubber pads to protect surfaces. Nice touch.That said, like me, you may want to think about buying a TV stand. The monitor only weighs about 25 pounds, so I'm looking at a universal stand like the pictured in my link, since I want this monitor as close to flush with my desk top as possible.Link: http://www.amazon.com/Universal-Stand-Base-Mount-Flat-Screen/dp/B00DZVPFGU.This 40" monitor is 36.5" x 8.3" x 23.1". I've seen pictures of this size monitor in a 3 panel portrait mode configuration. I don't have the room or the money, but it looked amazing. I think this stand could hold this monitor in portrait mode, if someone wanted to do that.The first time I powered this monitor up, the colors were all weird and the screen ran off the side, but this self-corrected after a restart. I find that this doesn't happen when I have the monitor turned ON before I start my PC. Must be a quirk related to the graphics drivers. There are speakers, too, but I haven't tried them, yet.My monitor has a single, inconspicuously placed, dead/stuck black pixel. These companies have return policies based on how many bad pixels exist within a certain distance of each other and/or maybe having to not be in the central viewing area. I was too superstitious to ask about this. As it happens, for me, one is as good as none.However, if you search the web for “fix dead pixels”, there are suggestions that appear to work for many people. I’ll look into that possibility later.In any case, I am really well satisfied with the appearance, quality, build, and beauty of this display. I feel the same way about the customer service and support I received from RED TAB INC and YAMAKASI.If my experience is anything to go by, do not be afraid to go BIG with the YAMAKASI O40USUT MONITOR!!I am pretty sure it will put a BIG SMILE on your face. YAMAKASI O40USUT 40 Inch UHD / 4K Monitor (3840 x 2160) HDMI 2.0, UHD (60Hz), HDCP 2.2, MHL, 10Bit 02/21/2016: Still loving this monitor. No problems, thus far.

I've only had the monitor for about a week, but so far I love it! I won't write quite as in depth review as my predecessor, but I'll post some of my findings.First, the whole ordering process. It was a joy ordering from Red Tab Inc. I ordered the monitor Tuesday morning, it was shipped late Tuesday night/early Wednesday morning and arrived Friday afternoon. The packaging was fantastic, the wooden crate and the padding inside the crate kept the cardboard box in great condition. I'm very impressed with the speed and protection during the shipping process.Setup of the monitor was easy, it just required basically screwing on the attached metal legs and plugging it in. Unlike the other two reviewers, mine came with not one, but two power adapters. One is a simple conversion, and one is a full fledged surge protector with multiple different kinds if inputs and outputs. The monitor came with Korean menus, but it didn't take long to figure out how to switch to English. Looking through the menu (though it's in Korean) I was able to find out which HDMI ports correspond to what kind of output. There is one 2.0 that gives you 60hz at 3840x2160, two of them give you 30hz at 3840x2160, and one of them gives you 1920x1080 at 60 hz for some reason. At the moment I have a Bluray player, my computer, and a Chromecast connected and they all work great.We are selling our TV so we have this monitor in a location that works both as a monitor up close and a TV from far away. We've watched a few Netflix and Youtube videos on it and the picture looks great. There's not much 4k content out there, but what we've found looks great, and the 1080p content looks really good on it as well. It's certainly not going to compare to the best monitors out there but for the price, resolution, and overall real estate you get it's a steal. I have used the speakers and going in with extremely low expectations I'm pretty happy with them. We'll definitely be connecting exterior speakers as soon as we get some since we use this as a TV as well, but the speakers have been getting us by until we're able to get those.As far as gaming I haven't spent enough time with it to fully test out all my games, but in my initial testing they look great. I've got two GTX 970s in SLI and it runs CS:GO maxed out at 120 fps, it also does very well with Skyrim. If you've got the power to push games at this resolution they look stunning, you won't be disappointed. I will say, at least with CS:GO, it takes some getting used to. Having the bigger screen in general forces you to mess around with mouse sensitivity until you find something you're comfortable with.Productivity is also great on this monitor. I will typically have different browser windows in three of the four corners and in the last a calculator and a small notepad open. It's great to be able to have pretty much everything you need open, all viewable at any given time.The listing states there may be 3-5 dead pixels and this was a bit of a concern for me as I was worried I'd get one right in the middle or something, but I've done a few different tests and honestly I can't find any dead pixels. I'll update this if I ever notice any later, but I looked pretty close and did the white, black, red, green, and blue backgrounds and couldn't find anything.I did a lot of research on ~40" 4k monitors and there were a few others I wanted to try, but due to limited quantity and rising prices I ended up going with this one, and I'm glad I did.