Review on 🎮 Koopman 4K HDR HDMI Switch: 4 Ports 4K 60Hz HDMI 2.0 Switcher Selector with IR Wireless Remote – Supports UltraHD Dolby Vision, High Speed (18.5Gbps), HDR10, HDCP 2.2 & 3D by Roel Lebron

I am pleased to report that this very affordable HDMI switch transmits 4K RGB 60Hz signals flawlessly at a full 18Gbps bandwidth. In addition, it supports the correct transmission of Dolby Vision, Low Level Dolby Vision (LLDV), HDR10, Dolby Atmos and Dolby Atmos MAT signals. I haven't tested HLG or HDR10+ as I don't have any test footage at the moment. I am very impressed with the performance of this switch. Not long ago, a device with similar performance cost over $60. I tested all signals and EDID support with HDFury DIVA and HDFury Vertex from Xbox One X, PS4 Pro, Apple TV 4K and NVidia GPU. I experienced no signal dropouts or visual distortions when using various HDMI cables from Monoprice, RevainBasics, and KabelDirect. HDMI input switching is automatic and fast; however, has limited functionality on devices that do not turn off completely (e.g. Apple TV), as is the case with most auto-switching implementations that rely on voltage sensing. For maximum functionality, automatic switching should only be used with devices that can be turned off completely or that remove HDMI power in standby mode. YMMV. There doesn't appear to be a way to disable automatic switching, but a toggle button or remote can be used for manual control instead. The remote control comes with the CR2025 installed. Nice design, although it would be nice if the HDMI output and power connectors were placed in line with the input ports for a cleaner profile. Build quality is decent, the material is mostly plastic with a thin layer of aluminum on the sides. The top and bottom are made of reflective material, which quickly accumulates scratches after removing the protective film. Inputs and outputs are hilariously labeled "Input” and "Output”. The switcher requires external power and will not work on HDMI power like some other switches that do not require external power at lower resolutions. The kit includes a 5V power cable with ferrule to the USB cable as shown in the marketing photos. Instead, it includes a typical power plug, which is less flexible than USB power cords depending on whether an outlet is available. Also, the cord on the power adapter is very short (3 feet), which is typical of many 5V power adapters. Overall, the performance of this device is hard to beat for its price. If you're looking for a very affordable 4-port HDMI switch that delivers on its 4K 4:4:4/RGB @ 60Hz promises, I would suggest you give this one a try.