1x4 2.0 HDMI Splitter with Scaler Audio Extractor 4 Ports with Full Ultra HDCP 2.4K at 60Hz & 3D Supports EDID Control - UHDS-104A

I've never had something so perfectly solve a niche problem of mine like this device has before. i'm still kind of amazed at how EXACTLY it fit what I needed. trying to split a single video feed to a 4k tv, a 4k monitor, a 1080p portable display built into the case panel, and a 1080p wireless hdmi broadcaster. I spent weeks trying to get it working in windows, nvidia panel, trying multiple splitters and adapters, even a standalone orei 1080p down converter... this has it all built into one little neat device. It also replaced my need to use a software program to clone the audio out too. Only downside is that it's power by an ac adapter and barrel plug. I picked up a usb to barrel plug adapter cable and now i"m able to run it off of usb too!

Switches are tiny and no quality instruction on how to set them. I wanted 4k dolby sound to my main tv and 1080p to the second which product description says this should do. It cannot. To get it set to send full 4k to the main tv i had to switch the first to copy, it could not then downscale properly for 2nd tv. Turning on the downscaling gave me a distorted picture on the 2nd tv and turning it off gave me a blank screen. If I switched the first switch to auto I only got 1080 on all screens.

In my experience of splitting a 4K Firestick (to be kept at 4K setting) to a 4K projector (output: 1) and three 1080P monitors (output: 2,3,4), to get sound you have to use an additional audio extractor (4K rated) with output 1. EDID set to "copy" and 4K -> 1080: 2,3,4 set to "on". I do (use remote control power to) turn on the OREI & extractor FIRST, before the displays.

This just works. I have spent much $$$ trying to get a simple audio out with my Blackmagic Design ATEM Mini Pro video switcher with various HDMI audio extractors. This unit provided a clean 3.5 mm audio output (these video switchers don’t have separate headphone/audio output built in), whether via headphones or via speakers. Little to no humming, no clicking, just usable sound for monitoring separate from a TV or monitor-with-speakers.

I was looking for a splitter that would also extract sound, I found a few option from this manufacturer and I wrote them to ask questions, they recommended this unit as it will automatically scale the video which I thought it was good to have but in addition it will extract the sound to optical and analog and you get both at the same time. I connected the optical to my soundbar and the analog to a audio system, I use it for Karaoke so it was good to have the sound go to a mixer but also to a soundbar in case I don't need it. Worked flawlessly, recommended