Some HDMI switchers come without a separate power supply – instead, they get their power from the HDMI devices you connect (which are usually connected to either the wall outlet or your TV’s USB port). I'd rather not upgrade to a new AVR just for eARC and given the cost and teething issues with HDMI 2.1, so the solution seems to be a simple HDMI 2.1 splitter for the PS5 to allow the HDMI 2.1 video signal (4K/120Hz/VRR/ALLM etc) to go the TV, and the Hi-res audio (DTS-MA, DD-Tru HD, Atmos) to go to the AVR. HDMI Switch with optical out】It supports 3840x2160@60hz 4:4:4, HDR, HDCP, 1080P 3D. With S/PDIF and L/R audio port, you can select proper audio modes for your sound device. High quality audio and video make this 4 port HDMI switch suitable for home theater, gaming console,conference room and other scene. Very pleased to avoid the need to upgrade my Pioneer LX-85 for now, as the only thing I'm missing out on is Atmos (and that would require me to mount ceiling speakers, so is not on the cards for now).

HDMI SWITCH 3 IN 1 OUT: This UGREEN 4K HDMI switch box makes it easy to stream video and audio from 3 HDMI devices to 1 HDMI display. Our HDMI switch 3 port has two switching methods, manual switch and remote control, which frees you from plugging and unplugging HDMI cables, so you can easily enjoy work, and play games between 3 devices.

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The main reason for buying an HDMI switcher is that you no longer have enough ports on your TV. Therefore, it would be annoying to run into the same problem two months after you buy the switcher… Ultra HD Resolution】Support HDTV 4K (3840x2160P) / 30Hz resolution, HDMI 1.4 Compatible, 3D display supported, Let you enjoy high-definition movie-like vision and smoothly comfort. Also support HD Audio and HDCP Compliant, no distortion of audio or video, no delay in signal transference. So a switcher lets you switch between different HDMI signals, while a splitter lets you split one HDMI signal out to several screens.

in 1 Out HDMI Switch】4k HDMI Splitter can easily stream video from 3 HDMI sources to 1 display, Compatible with Xbox 360, PS4，PS3，DVB Receivers, Blu-ray Player, Laptop and most of other audio and video HDMI devices. ✔Note: Can not display 2 monitors simultaneously. Broad Compatibility】 HDMI Splitter Switcher compatible for most standard HDMI port devices. Support Input: computer, XBox 360, XBox One, Compatible with PS5/4/3 , Blu-Ray DVD player etc. Output: HD-Ready or Full HD TVs, monitors, projectors etc. HDMI Switch 5 Port 】AVMTON HDMI Switch Splitter 5 Port Simply switch 5 HDMI sources by IR remote control or physical switch button to a single display, reduce the mess of cable connection on your TV. HDMI port expander is compatible with the latest version of HDMI 1.4 ,24k gold plated HDMI Input and Output,which increase transmission performance.(Not HDMI Splitter 1 in 5 out) Make sure that your HDMI switcher is compatible if you are routing the output of the switcher through a home theater receiver that provides decoding for advanced audio formats, such as Dolby TrueHD, Atmos, DTS-HD Master Audio, DTS:X.

Splitters, and many switches, will be labeled in their name with the number of inputs and outputs, respectively, separated by an "x". So a "1x3" splitter will have one input sent to three outputs. That’s where an HDMI splitter comes in – it’s a small box that lets you plug in one “Input” device – that’s your streamer/ DVD Player/etc.’– and connect TWO (or more) screens to the “Output” side, all via HDMI cables. Plug and Play: No external power supply is needed. This 8K HDMI 2.1 switch 2 in 1 out or 1 in 2 out is easy to set up and operate. Just connect your HDMI devices and manually push the button of the HDMI switcher can easily switch to the other source you want, the LED light tells you which port is active.