EZCOO HDMI Splitter 1x2 4K 60Hz 4:4:4 18Gbps HDR Dolby Vision HDCP 2.2, Audio Breakout SPDIF Optical 5.1CH, Support HDMI Scaler 4K 1080P Work Together, with Firmware Upgrade

The splitter works!I am using an OPPO 203 UHD BR player. The splitter passes 4K HDR signal to my TV, while feeding downscaled 1080p signal to another device.Here are the situations and results:Only 4K input -> Both 4K and 1080p outputs are perfect.4K with HDR 10 -> Perfect as well.4K with Dolby Vision - Here comes a little problem. My TV shows 4K and Dolby Vision content with no problem at all. For my other device receiving downscaled 1080p signal, the color is weird, I believe the HD device cannot process Dolby Vision data. However, please correct me if I am wrong, so far none of the HD device can process downscaled 1080p signal with Dolby Vision. So there's not the splitter's fault.I noticed that if I change the switch of "downscale" from yes to no , or vice versa, I have to unplug the power cable to restart the splitter before the change can be effected. It doesn't bother me at all as I always need downscale function on.I must give the splitter 5 stars considering the stability and price.Update on 20/7/2018:After I upgraded my player's firmware and TV, the splitter stopped working with DV. I have raised the issue with the seller and they solved the problem very shortly with excellent customer support! Now the splitter is working perfectly well. I wish I can give more than 5 stars!

I had researched this item. It has a nice feature set for the price and generally good reviews.I received the item, its well packaged. The item itself feels durable and high quality.I plug everything in, and its working 2 x 4k steams with HDR, and audo out via optical all working.All working, except when its not going to a black screen, dropping signal 5-10 times every 10 minutes. The individual 4k outs, will black out either independently or simultaneously, and the optical audio will always cut off with it. This makes the device unusable for me and effective paper weight, while I try to find a similar solution.I requested a replacement from Amazon, thinking it was a defective unit, but same deal with new unit. I do not experience this issue at all when directly connected to either display. Their website is of no use, with very little information, and with bad grammar and English. I tried to find a firmware update, but the link just goes to a different device page.I gave it one star because it doesn't do what it needs to do for more than 4 minutes and was effectively a waste of my money.

EDIT 5/3/2018: After writing my review, the company contacted me and sent me a working unit. I guess my original was damaged during shipping. This replacement works as intended and I couldn't be happier.I like build quality and design, but the splitter I bought only half works. Output 1 works just fine. Output 2, however, keeps trying to send a signal but make the second display just blink. I've tried toggling the scaling switch and multiple devices and displays. I would have exchanged it, but by the time I was done messing around the item was taken off the store for some reason. I forgot about this thing, but I got a reminder to write a review, so I guess it's back on the market. If yours works, awesome, but make sure you act quick if you want to exchange or return.

HDMI has become a prevalent video/audio interface in home entertainment devices and PCs. However, the development of the interface itself as well as the data protocols it carries has resulted many limitations to use video and audio devices to their maximum capabilities. I have the following devices at home: an Intel NUC computer, an LG 4K HDR computer display, an Xbox One S, a Roku Ultra, a Sony soundbar, and a pair of Sony HDMI-wireless headphones. All sources (Intel NUC, Xbox, and Roku) are able to deliver 4K HDR video and 5.1/7.1 audio (LPCM decoded or Dolby formats). The problem here is that the LG display only supports 4K HDR video and stereo audio; the Sony soundbar supports Dolby Digital 5.1 and 1080p video; and the Sony headphones support Dolby TrueHD 7.1 and 4K 30Hz (no HDR). The audio and video signals are delivered using one HDMI cable from the source, and there is no way to have both 4K HDR video and multichannel audio. This is because the capabilities of devices are communicated to the sources via the mechanism called EDID. For my setup, the legit connection would be source->audio device->display. Both my audio devices don't support 4K HDR. Then their EDID will tell the source so and the HDR feature is disabled automatically. On the NUC, it is possible to use an adapter (USB C to HDMI) to connect the display and audio device separately. However, the audio device will be identified as a display as well. PoweverDVD doesn't allow HDR when more than one display is connected. All the good technologies won't make my setup work, even though theoretically I have both 4K HDR video and multichannel audio capabilities.Without an HDMI splitter like this, I would have to buy a new AV system supporting both 4K HDR and multichannel audio. But my soundbar sounds good to me and I like the wireless headphones. It would be a waste if I have to buy a new device every time the technology updates.That's why a splitter like this is great. I'll just use one setup to demonstrate how it works. I connect the NUC to the input of the splitter, the main output to the LG display, and the secondary output to the Sony HDMI headphones. I set the scaler to ON using the switch. However, without further configuration, the NUC still reads the EDID from the LG display, which only has stereo audio. To enable multichannel audio, the EDID of the splitter needs to be programmed. The single most important feature of the splitter is that a USB port is provided for the user to change the EDID. To change the splitter's EDID, I use a Windows 10 PC (the NUC itself) and connect the splitter with a USB cable. I downloaded the Serial Debug Assistant app. The splitter has 30 presets of EDIDs. No. 30 provides support of 4K HDR 60Hz and 7.1 sound. To set it, I sent the command "SET IN0 EDID 30". Now, the NUC thought the device connected on HDMI has support of all those formats. The splitter simply sends the data to the display and headphones separately.Because I'm not always using the Intel NUC with the splitter, sending serial port command via an Android phone is another feature available. For example, when I unplug the splitter from the NUC and plug it to the Roku Ultra, I can use a USB C to micro cable to connect my phone to the splitter. I downloaded a serial port tool from the Play store. Then, sending the command will be the same.The command to set the EDID has the format: SET INx EDID y", where x is the input port number (0 means all ports) and y is the EDID preset number (1-30). There are also 3 user programmable EDID settings. The command to program the EDID has the format SET INx EDID Uy DATA s, where x is the input port number, y is the user customizable EDID setting number (1-3), and s is the EDID string in hexadecimal format.