AV Access 4KMX42-H2A 4×2 4K HDMI Matrix Switch with ARC & SPDIF Audio Extraction, HDMI 2.0 Switcher w/ Auto Downscaler for Home Theater
Four sources. Two screens. Your choice on each.
Choose which of four HDMI sources appears on each of 2 connected displays. 4KMX42-H2A gives a meeting room, entertainment space or presentation setup independent routing, so screens can show the same source or different sources as needed.
4KMX42-H2A
Know what connects where.
Connection overview. Check the requirements below for the exact ports, cable type and supported operating mode.
One source here. Another over there.
Route any connected input to any of the 2 outputs. Put a presentation on one screen and a separate feed on another, or send the same programme to every display without changing cables.
A place for 4K and Full HD screens
Output downscaling lets a supported 4K signal feed a 1080p screen while another output retains 4K. Downscaling changes resolution; it should not be treated as automatic HDR-to-SDR conversion.
Make sound and control part of the plan
ARC return and optical audio extraction are associated with HDMI Output 2. Analogue output supports stereo PCM; optical supports stereo PCM and compatible compressed 5.1. Front buttons, IR remote and RS232.
Make sure it fits your setup.
Independent sources
A matrix routes existing video signals. For different content on different screens, connect distinct sources or independent computer video outputs.
Mixed display formats
Check each display’s supported resolution, HDR and audio format. A resolution scaler does not add formats a screen cannot decode.
Audio routing
ARC return and optical audio extraction are associated with HDMI Output 2. Analogue output supports stereo PCM; optical supports stereo PCM and compatible compressed 5.1.
From unboxing to connected.
Match your devices
Check connector types, signal direction and the required output mode.
Make the connections
Follow the labelled input and output ports for the selected arrangement.
Select your settings
Choose the source, layout or pairing mode supported by this model.
Confirm operation
Check the image, sound and controls with your actual connected equipment.
4KMX42-H2A at a glance.
| Model | 4KMX42-H2A |
|---|---|
| HDMI inputs | 4 |
| HDMI outputs | 2 independently routed |
| Video | Up to 4K 60Hz 4:4:4 8-bit |
| HDMI / HDCP | HDMI 2.0 / HDCP 2.2 |
| Bandwidth | 18Gbps |
| Scaling | 4K to 1080p output downscaling |
| Audio connections | ARC return and optical audio extraction are associated with HDMI Output 2. Analogue output supports stereo PCM; optical supports stereo PCM and compatible compressed 5.1. |
| Control | Front buttons, IR remote and RS232 |
| Power | 5V/1A |
A little clarity before you buy.
How is a matrix different from a splitter?
A splitter repeats one input on several outputs. A matrix can select a different input for each output.
Can it turn one PC output into separate extended desktops?
No. One HDMI input is one video signal. Independent desktop content needs separate graphics outputs from the computer.
Will optical output carry lossless Dolby TrueHD?
No. Optical audio is limited to supported stereo PCM and compressed surround formats. Use a suitable HDMI audio path for lossless formats.
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