Where the source plugs in.
Your player, console or PC connects to HDMI IN. The unit sits inline and offers the source whichever EDID you have selected.
HDMI IN · FRL / TMDSEDID CONTROL · HDMI 2.1 · 48Gbps
See what your HDMI gear negotiates.Then take charge of it.
No picture, a blank screen after a format change, or 4K120, VRR, Dolby Vision or Atmos that never shows up? Most of these start with what the source is told about the chain. DR HDMI 8K shows you that exchange and lets you decide it.
48Gbps / 1500MHz8K60 4:2:04K120 4:4:4VRR + ALLM flagsDolby Vision / LLDV100 EDID tables
EDID emulation · HDMI 2.1 repeater · OLED status readout · web browser control
48Gbps
8K60Hz
4K120Hz
1 × INPlayer, console or PC
RJ45Web server and IP control
OLEDSignal status on the unit
USB-C5V 2A supply
Troubleshooting by symptom
Pick what you are seeing.
Each tab explains how DR HDMI 8K approaches a common HDMI fault. The method is always the same: make the capability exchange visible, change one thing on purpose, then check the result.
NO SIGNAL
Check what the source and the display each report.
The OLED pages and the web server show RX and TX status next to the EDID in use. From there you can mirror the sink’s EDID, switch to a known table or change individual capability flags until the handshake behaves.
Read the HDMI handshake guide →What the unit does
Small enclosure. Full say over the handshake.
Three EDID modes form the core. Copy the EDID of the connected display or AVR, load one of the stored tables, or take the sink EDID and override selected flags (AutoMix). Troubleshooting becomes a series of deliberate tests rather than a round of cable swaps.
01 / EDID
EDID modes and storage
Mirror the sink, choose from 100 tables, upload your own EDID file, or save the active EDID to custom slot 8, 9 or 10 for later use.
02 / VIDEO
FRL, VRR, ALLM and HDR flags
Cap the advertised FRL rate, switch VRR and ALLM on or off, and set HDR10 or HDR10+ (each with or without HLG), or remove HDR altogether.
03 / DOLBY VISION
Dolby Vision and LLDV blocks
Capture the display’s DV data block, reuse it in AutoMix when an AVR joins the chain, or create a custom block in the web interface.
04 / DIAGNOSTICS
Status pages on the OLED
Page through the incoming FRL rate, RX and TX EDID details, and unit info such as serial number, firmware version and IP address.
05 / NETWORK
Browser and IP control
Over Ethernet you get the embedded web server, DHCP or static addressing, and IP/Telnet commands on port 2201 by default.
Why control the EDID
The same devices, now with a checkpoint in between.
DR HDMI 8K is not a cure for every HDMI fault. What it adds is a fixed, readable point in the path, where you can see what the sink offers, what the source receives and which capabilities you let through.
NO EDID CONTROL
SOURCE?DISPLAY / AVR
The picture fails, and nothing tells you why.
Source, AVR, display, cable and the EDID they negotiate together all shape the outcome. With nothing to look at, every attempt at a fix changes several things at the same time.
- Advertised capabilities stay hidden
- Endless power cycling and cable swapping
- FRL, HDR, VRR and audio issues blur together
DR HDMI 8K IN THE PATH
SOURCEDR
8KDISPLAY / AVR
8KDISPLAY / AVR
Set the EDID. Read the status. Test one change.
Start from a known EDID, check the RX and TX information, then adjust only the capability you want to test.
- Copied, stored or modified EDID
- Signal and EDID details on OLED and web server
- Hot-plug reset on demand from the web interface
Hardware tour
Trace the path from input to output.
As you scroll, the photo stays in place and each port or control is picked out in turn.
USB-C POWER
HDMI IN
HDMI OUT
RJ45 LAN
On to the display or AVR.
HDMI OUT feeds the next device in the chain. DR HDMI 8K reads that device’s EDID and lists its capabilities in the interface.
HDMI OUT · SINK EDIDA control page on your network.
Connect the RJ45 port to reach the built-in web server with its EDID, Dolby Vision, network, firmware and configuration settings.
RJ45 · WEB SERVER · TELNETReadouts on the unit itself.
The blue OLED shows link status, the incoming FRL rate, EDID details, firmware version and IP information. The rotary switch pages through the screens.
OLED · ROTARY SWITCHGuides by topic
Step-by-step help for specific HDMI setups.
Each guide focuses on one kind of problem, covers the HDMI background you need and shows where DR HDMI 8K fits into the diagnosis.
GAMING
Consoles, PCs and 4K120 / VRR
When a PS5, an Xbox Series console or a gaming PC will not offer 4K120 or VRR and the capability exchange may be the reason.
Read the gaming HDMI 2.1 guide → APPLE TV 4KApple TV 4K: Dolby Vision and Atmos
Why the Apple TV asks to retest Dolby Vision or HDR after an EDID change, and which settings affect Atmos output.
Open the Apple TV 4K guide → HANDSHAKEDiagnosing HDMI handshakes
A method for pinning down EDID and hot-plug negotiation faults, one variable at a time.
Go to the handshake guide → DOLBY VISIONDolby Vision and LLDV EDID
Read the display’s DV block, keep a working copy and create a custom one when your chain needs it.
Go to the Dolby Vision guide → EDIDHow EDID management works
Copy-sink, stored-table and copy-and-modify modes, plus uploading and saving your own EDID files.
Go to the EDID manager guide → 48GbpsBuilding 8K60 and 4K120 chains
What 1500MHz and 48Gbps demand from cables and endpoints, and the part EDID plays in getting there.
Go to the 8K / 4K120 guide →CABLESLong and fiber HDMI runs
How to tell EDID and handshake faults apart from power, bandwidth and signal-integrity problems on long cables.
Go to the long HDMI guide →PROJECTORProjectors that sync slowly or not at all
Using a fixed EDID to investigate slow lock-on, format switching and source → AVR → projector setups.
Go to the projector guide →AUDIOAtmos, DTS and audio EDID
Which audio formats the EDID advertises upstream, and how that shapes what a source is willing to send.
Go to the audio EDID guide →10 custom + 90 predefined EDID tables
One hundred EDID tables, from 480p up to 8K60.
Tables 1–10 are custom default slots, preloaded with EDIDs from displays and AVRs such as the LG C9 and Denon S960H, and you can upload your own EDID into them. Tables 11–100 are predefined, running from 8K60 and 4K120 down to 720p60 and 480p60, each in 7.1, 5.1 and 2.0 audio versions. Filter the main groups below.
8K60 4:2:0 at FRL-5 with HDR. Tables 11–13 add VRR, and every set comes with 7.1, 5.1 and 2.0 audio.
4K120 4:4:4 10-bit at FRL-5 with HDR, with VRR included on tables 17–19.
4K120 4:2:0 with HDR and VRR on tables 23–25, again in three audio versions.
4K60 and 4K50 4:4:4 at 600MHz, plus 4K60 4:2:0 in 12-bit or 8-bit 300MHz form, each with and without HDR.
4K30 in 4:4:4 or RGB at 300MHz and 4K24 4:2:2 12-bit, most with BT.2020 and optional HDR.
1080p60 4:4:4 12-bit and 1080p24 4:4:4 in 12-bit or 8-bit, with HDR/BT.2020 versions, plus 8-bit 1080i60.
The hardware and its box
Black metal. Blue OLED. Orange box.
DR HDMI 8K is a compact black metal enclosure measuring 10 × 6 × 2.2 cm and weighing 120 g. A blue 1-inch OLED shows the status pages, and a rotary switch handles the on-device menu. It runs from an external 5V 2A supply connected by USB-C. The unit ships in an orange and black retail box, with the key features and technical specifications printed on the back.
Built-in web server
Every setting in a browser tab.
Once the RJ45 port is on your local network, DR HDMI 8K serves its own control pages. Open them by IP address, by hostname (http://DR8K-XX/) or through mDNS (http://DR8K-XX.local/), where XX stands for the last two digits of the serial number. From there you manage EDID, Dolby Vision, OLED, network and firmware settings.
DR8K · LIVE STATUS
SIGNALACTIVE
LINKTMDS / FRL · LANES
RX / TXCONNECTED
EDIDCOPY · CUSTOM · AUTOMIX
NETWORKDHCP · STATIC IP · mDNS
Specifications
Hardware and signal details at a glance.
| HDMI ports | 1 × HDMI 2.1 input, 1 × HDMI 2.1 output |
| Bandwidth | Up to 1500MHz / 48Gbps (FRL6) |
| Maximum video modes | 4K120 4:4:4 10-bit, 8K60 4:2:0 10-bit, 8K30 4:2:2 12-bit, plus DSC formats within 48Gbps |
| EDID modes | Copy sink EDID, custom/predefined table, copy sink EDID and modify (AutoMix) |
| EDID tables | 100 in total: 10 custom-default slots + 90 predefined tables |
| Video flags | FRL rate (off or FRL1–FRL5 maximum), VRR, ALLM, HDR and Dolby Vision |
| Audio pass-through | PCM up to 192kHz, Dolby TrueHD, Dolby Atmos, DD+, DTS, DTS-HD MA, DTS:X, DSD, DST and HBR |
| Control and network | Rotary switch with OLED menu; RJ45 Ethernet with embedded web server and IP/Telnet/HTTP commands; DHCP or static IP, hostname and mDNS access |
| Display | 1-inch blue OLED, 128 × 64 pixels |
| Power | External 5V 2A supply via USB-C |
| Size and weight | 10 × 6 × 2.2 cm (3.9 × 2.3 × 0.8 in), 120 g (0.26 lb) |
| Input lag | Under 1 ms |
| Certifications | CE, EAC, FCC, RoHS |
Guides and background
Read up before you connect anything.
EDID managementCopy, AutoMix and custom EDID explained →HDMI handshake fixesTrack down EDID and HPD faults →Dolby Vision EDIDWorking with DV and LLDV data blocks →8K60 and 4K120FRL rates and 48Gbps in practice →HDMI 2.1 gamingGetting 4K120, VRR and ALLM working →Apple TV 4KDolby Vision retests and Atmos settings →
FAQ
Common questions about DR HDMI 8K
What kind of device is DR HDMI 8K?
An HDMI 2.1 EDID manager, emulator and repeater. It sits between a source and the next device in the chain and lets you see and control the capability information they exchange.
Which 8K and 4K120 formats can it pass?
The DR HDMI 8K manual (Rev 1.2) lists 1500MHz / 48Gbps operation with maximum formats of 4K120 4:4:4 10-bit, 8K60 4:2:0 10-bit and 8K30 4:2:2 12-bit, plus DSC-compressed signals.
Is it useful for HDMI handshake problems?
Yes, that is one of the main reasons to use it. With a fixed EDID, RX/TX status and an on-demand hot-plug reset, you can work out whether a fault comes from negotiation between the source and the downstream devices.
How do I open the web interface?
Connect the RJ45 port to your local network, then enter the IP address shown on the OLED, the hostname or the mDNS address in a browser on the same network.
What can it do with Dolby Vision?
It captures the Dolby Vision data block from the connected display, shows it in readable form and can reuse it in an AutoMix EDID. The web interface also lets you build a custom DV data block, for example for LLDV setups.
DR HDMI 8K
Put a checkpoint in your HDMI chain.
Available from the official DR HDMI 8K product page at HDFury.eu.