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

Got this so I could play football on multiple TVs in different rooms, from a single cable box. Wanted to make sure sound and picture were synchronized. This worked perfectly and was exactly what I needed! I’m able to play 3 TVs on the single source with no delay and no impact to picture quality. (Has ability to go up to 4 TVs). Super easy setup. Highly recommend this.

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.

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

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.

looks like switch is well made