UHD-808 Overview and Use Cases – OREI

What Is the UHD-808?

The OREI UHD-808 is an 18Gbps 8x8 HDMI Matrix with ARC Function. It supports the routing of video and audio from any of 8 HDMI source devices to any combination of 8 HDMI displays simultaneously. Each input can be sent to any or all outputs independently, making it ideal for commercial AV installations, multi-room home theater setups, conference rooms, and other environments where multiple sources and displays need to be managed from a single device.

The UHD-808 supports 4K@60Hz video, HDR formats including Dolby Vision, HDR10+, and HLG, and passes through high-resolution audio including Dolby TrueHD, DTS-HD Master Audio, Dolby Atmos, and DTS:X. It also includes ARC support, a per-output 4K to 1080P downscaler, audio de-embedding via analog and coaxial outputs, and CEC and EDID management. The matrix can be controlled via front panel buttons, IR remote, RS-232, LAN, and Web GUI.

IMPORTANT — UHD-808 Routes Any Input to Any Output Independently

The UHD-808 is an 8x8 matrix, meaning it has 8 HDMI inputs and 8 HDMI outputs. Unlike a splitter (which sends one source to all displays) or a switch (which sends one source to one display), the UHD-808 allows each of the 8 outputs to independently display any of the 8 inputs at the same time. For example:

Output 1 can display Input 3 (e.g., a Blu-ray player)
Output 2 can display Input 1 (e.g., a streaming device)
Outputs 3 through 8 can each be set to any input independently

This makes the UHD-808 suitable for digital signage, multi-zone AV distribution, and complex home or commercial installations.

IMPORTANT — ARC Audio Is Extracted to Coaxial Output, Not HDMI

The UHD-808 supports ARC (Audio Return Channel) on each HDMI output port. When ARC is enabled on an output, the ARC audio signal from the connected TV or display is extracted and sent to the corresponding coaxial (RCA) audio output on the rear panel. This allows a TV's internal audio (such as from built-in apps) to be routed to an external audio system connected to the coax output.

ARC must be enabled per output using the Web GUI, RS-232 commands, or the front panel. It is disabled by default. Note that this product supports ARC, not eARC. High-bitrate formats such as Dolby TrueHD and DTS-HD Master Audio require eARC and are not supported over the ARC path.

IMPORTANT — The 4K to 1080P Downscaler Works Per Output

Each of the 8 HDMI outputs on the UHD-808 has an independent 4K to 1080P downscaler. This means a 4K source can be sent to a 1080P display on one output while the same or a different source is sent at full 4K to another output. The scaler mode for each output can be set to Bypass (pass through), 4K → 1080P, or Auto, and can be configured through the Web GUI, RS-232 commands, or the front panel.

Ports and Panel Layout

Front Panel

Name	Location	Function
OLED Screen	Front panel	Displays matrix switching status, input/output port, EDID settings, baud rate, and IP address.
Power LED	Front panel	Lights green when powered on; lights red when in standby mode.
Input Buttons (1–8)	Front panel	Press after selecting an output to assign the desired input source to that output.
Output Buttons (1–8)	Front panel	Press first to select the output channel, then press an input button to assign the source.
MENU / UP / DOWN / ENTER	Front panel	Used to navigate the OLED menu for EDID check and setting, baud rate configuration, and IP address lookup.
POWER Button	Front panel	Long press for 3 seconds to enter standby mode. Short press to wake the device.
IR Window	Front panel	Receives IR remote signals. Effective range: up to 7 meters at ±45° angle.
LOCK Button	Front panel	Short press to lock all front panel buttons except the Power button. Press again to unlock.

Rear Panel

Name	Location	Function
INPUT Ports (IN 1–8)	Rear panel	Connect up to 8 HDMI source devices such as streaming boxes, Blu-ray players, gaming consoles, or PCs.
OUTPUT Ports (OUT 1–8)	Rear panel	Connect up to 8 HDMI displays such as TVs, monitors, or projectors.
COAX OUT (1–8)	Rear panel	Coaxial (RCA) audio output for each channel. Outputs de-embedded audio from the corresponding HDMI output, or ARC audio when ARC is enabled.
L/R OUT (1–8)	Rear panel	Analog stereo audio output (3.5mm) for each channel. Outputs PCM 2.0 de-embedded audio from the corresponding HDMI output.
IR EXT	Rear panel	Connect the included IR receiver cable here if the front panel IR window is blocked or the unit is in a closed cabinet.
TCP/IP (RJ45)	Rear panel	Connect to a network switch or PC for LAN-based control via Web GUI or Telnet.
RS-232 (D-Sub 9)	Rear panel	Connect to a PC or control system for RS-232 serial control.
DC 12V	Rear panel	Connect the included 12V/5A power adapter.

Step-by-Step Setup

Connect your HDMI source devices (streaming boxes, Blu-ray players, gaming consoles, PCs, etc.) to the INPUT ports (IN 1–8) on the rear panel.
Connect your HDMI displays (TVs, monitors, projectors) to the OUTPUT ports (OUT 1–8) on the rear panel.
If you want de-embedded audio output, connect coaxial cables from the COAX OUT ports to your amplifier or audio receiver, or connect 3.5mm cables from the L/R OUT ports to analog speakers.
Connect the included 12V/5A power adapter to the DC 12V port on the rear panel and plug it into a power outlet.
Power on the UHD-808 by pressing the POWER button. The OLED screen will display the current switching status.
To assign an input to an output using the front panel buttons, press the desired OUTPUT button first (1–8), then press the desired INPUT button (1–8). The OLED screen will confirm the selection.
Repeat for each output as needed, or use the Web GUI, IR remote, or RS-232 control to configure the full matrix routing.
If required, connect the TCP/IP port to your network and use the Web GUI to configure EDID settings, scaler modes, ARC, and CEC controls.

Cable Requirement — Important

For reliable 4K@60Hz performance, use Premium High Speed HDMI cables. The recommended maximum cable length is 16 ft (5m) for 4K@60Hz, 32 ft (10m) for 4K@30Hz, and 50 ft (15m) for 1080P.

Understanding Matrix Switching

The UHD-808 supports flexible many-to-many routing. Any input can be sent to any or all outputs at the same time. To switch inputs and outputs:

Using the front panel buttons:

Press an OUTPUT button (1–8) to select the output you want to configure.
Then press an INPUT button (1–8) to assign the desired source to that output.

Using the IR remote:

Press an OUTPUT button (1–8 or ALL) on the remote first.
Then press an INPUT button (1–8). Pressing ALL then an input routes that source to all 8 outputs simultaneously.

Using the Web GUI:

Navigate to the Video page, use the drop-down menus to assign any input to each output, and use Presets to save and recall commonly used routing configurations.

Understanding EDID Management

The UHD-808 includes smart EDID management with 21 factory-defined EDID settings, 2 user-defined EDID slots, and 8 copy-from-output EDID modes. EDID (Extended Display Identification Data) tells the connected source device what resolutions and audio formats the display supports.

EDID can be set per input using the front panel (MENU → EDID setting), the Web GUI (Input page), or RS-232 commands. Factory EDID presets range from 1080p Stereo 2.0 up to 4K60 4:4:4 HD Audio 7.1 with HDR. User-defined EDID files can be uploaded via the Web GUI.

What Source Devices Is the UHD-808 Compatible With?

The UHD-808 is compatible with any HDMI source device that outputs a standard HDMI signal at resolutions up to 4K@60Hz. This includes:

Streaming devices (e.g., Roku, Amazon Fire TV Stick, Apple TV)
Gaming consoles (e.g., PlayStation 5, Xbox Series X)
Blu-ray and DVD players
PCs and laptops with HDMI output
Cable and satellite boxes
Media servers and set-top boxes

What Displays Is the UHD-808 Compatible With?

The UHD-808 is compatible with any HDMI display, including TVs, monitors, and projectors. It works with both 4K and 1080P displays. The per-output downscaler allows a 4K source to be automatically or manually scaled to 1080P for older displays without any additional hardware.

Frequently Asked Questions

Q: What is the OREI UHD-808 used for?
A: The UHD-808 is an 8x8 HDMI matrix switch that allows any of 8 HDMI sources to be routed to any combination of 8 HDMI displays independently and simultaneously. It is used in multi-room AV setups, conference rooms, digital signage installations, and home theater systems.

Q: Can I send the same source to all 8 displays at once?
A: Yes. Using the IR remote, press the ALL button and then an INPUT button to route that source to all 8 outputs simultaneously. You can also configure this through the Web GUI or RS-232 commands.

Q: Does the UHD-808 support 4K and HDR?
A: Yes. The UHD-808 supports video up to 4K@60Hz (YUV 4:4:4) and HDR formats including HDR10, HDR10+, Dolby Vision, and HLG.

Q: What audio formats does the UHD-808 support?
A: Over HDMI, the UHD-808 passes through LPCM 2.0/5.1/7.1, Dolby Digital, Dolby Digital+, Dolby TrueHD, DTS 5.1, DTS-HD Master Audio, Dolby Atmos, and DTS:X. The coaxial audio outputs support LPCM 2.0, Dolby Digital/Plus, and DTS 5.1. The analog L/R outputs support PCM 2.0.

Q: How do I enable ARC on the UHD-808?
A: ARC can be enabled per output using the Web GUI (Output page → ARC toggle), RS-232 commands, or the front panel. When enabled, ARC audio from the connected TV is extracted and sent to the corresponding coaxial audio output on the rear panel.

Q: Does the UHD-808 support eARC?
A: No. The UHD-808 supports ARC only. eARC and its associated high-bitrate lossless formats (such as Dolby TrueHD and DTS-HD Master Audio via ARC) are not supported over the ARC path.

Q: Can I use the 4K to 1080P downscaler on just some outputs?
A: Yes. The downscaler is independent for each of the 8 outputs. Each output can be set to Bypass (no scaling), 4K → 1080P, or Auto mode individually through the Web GUI, RS-232 commands, or the front panel.

Q: How do I control the UHD-808 remotely?
A: The UHD-808 can be controlled via the included IR remote, RS-232 serial commands, LAN/Web GUI (connect via the TCP/IP RJ45 port), or Telnet. The default IP address is 192.168.0.100.

Q: Can I save routing configurations?
A: Yes. The UHD-808 supports up to 8 preset slots. You can save the current input/output routing configuration to a preset and recall it at any time using the Web GUI, RS-232 commands, or the IR remote.

Q: Can I control connected devices using CEC?
A: Yes. The UHD-808 supports CEC passthrough and CEC management via the Web GUI (CEC page) or RS-232 commands. You can power on/off connected source devices and displays, adjust volume, switch active source, and perform media playback controls.