2x4 8K UHD HDMI 2.1 48Gbps Splitter with Auto Downscaling/HDR-to-SDR Conversion/Audio De-Embedding/RS-232 (8K60/4K120 and VRR/ALLM/QMS/QFT/SBTM Support)
Overview
The BG-8K-24A is a professional 2x4 HDMI 2.1 distribution amplifier that switches between two HDMI sources and simultaneously distributes the selected signal to up to four displays. Supporting the full 48Gbps HDMI 2.1 bandwidth, it delivers resolutions up to 8K@60Hz and 4K@120Hz, while maintaining compatibility with HDR10, HDR10+, Dolby Vision, HLG, and HDCP 2.3 for exceptional image quality across modern AV systems.
Designed for mixed-display environments, the BG-8K-24A features independent output downscaling, per-output HDR-to-SDR conversion, comprehensive audio de-embedding, advanced EDID management, and multiple control options. Whether deployed in corporate AV, digital signage, broadcast, education, or luxury residential installations, it provides the flexibility and reliability required for next-generation HDMI distribution.
Features in Depth
The BG-8K-24A is engineered to distribute ultra-high-bandwidth HDMI 2.1 signals without compromising image quality. Supporting the full 48Gbps HDMI 2.1 specification, the unit accepts two HDMI inputs and distributes the selected source to four simultaneous HDMI outputs at resolutions up to 8K@60Hz (4:2:0) and 4K@120Hz (4:4:4). Full compatibility with HDCP 2.3 and HDR formats including HDR10, HDR10+, Dolby Vision, and HLG ensures seamless integration with today's premium source devices and displays.
One of the BG-8K-24A's standout capabilities is its intelligent per-output video processing. Each HDMI output independently supports 8K-to-4K or 8K-to-1080p downscaling, allowing modern 8K displays and legacy Full HD displays to operate simultaneously from the same source. In addition, HDR-to-SDR conversion can be applied independently on each output, ensuring optimal image quality when HDR content is viewed on SDR-only displays. Advanced EDID management, including preset, pass-through, and user-defined EDID modes, further improves compatibility across a wide variety of HDMI devices.
Beyond video distribution, the BG-8K-24A provides extensive audio and control capabilities for professional installations. Audio can be extracted from the selected HDMI source through optical (S/PDIF) and balanced or unbalanced analog outputs, with adjustable analog gain for seamless integration into external amplifiers, DSPs, and audio systems. An integrated HDMI test pattern generator simplifies installation and troubleshooting, while front-panel controls, the included IR remote, RS-232, and USB-C API support provide flexible integration into automation and control systems. Housed in a durable metal enclosure, the BG-8K-24A is built for reliable 24/7 operation in commercial and professional AV environments.
Features
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![bi_badge-8k]()
48Gbps DistributionSwitches between two HDMI sources and distributes the selected signal to four simultaneous HDMI outputs with support for 8K@60Hz and 4K@120Hz -
![bi_hdmi]()
Independent Output ProcessingEach HDMI output supports independent 8K-to-4K/1080p downscaling and HDR-to-SDR conversion for mixed-display environments -
![HDR]()
Premium HDR & HDCPCompatible with HDR10, HDR10+, Dolby Vision, HLG, and HDCP 2.3 for outstanding image quality and protected content playback -
![AUDIO DE-EMBEDDING]()
Audio De-EmbeddingExtracts HDMI audio to optical (S/PDIF) and balanced or unbalanced analog outputs with adjustable analog gain -
![Advanced EDID]()
Advanced EDIDIncludes preset, pass-through, and user-defined EDID modes plus an integrated HDMI test pattern generator for simplified installation -
![Four-Control-Modes]()
Flexible System ControlSupports front-panel controls, IR remote, RS-232, and USB-C API commands for seamless integration into professional AV control systems
- HDMI 2.1 compliant with the full 48Gbps bandwidth
- Supports resolutions up to 8K@60Hz (4:2:0) and 4K@120Hz (4:4:4)
- Simultaneously distributes one selected source to four HDMI displays
- Automatic or manual input switching via HDMI 5V detection, front panel, IR remote, or RS-232
- Per-output HDR-to-SDR conversion for legacy display compatibilit
- Independent output scaling supports mixed 8K, 4K, and 1080p display deployments
- Built-in EDID presets optimize compatibility between source devices and displays
- Internal HDMI test pattern generator simplifies installation, verification, and troubleshooting
- Adjustable analog audio gain for integration with professional audio systems
- Supports digital optical (S/PDIF), balanced analog, and unbalanced analog audio outputs
- Durable metal enclosure designed for continuous professional operation
- Includes IR remote, external IR receiver, RS-232 Phoenix connector, analog audio connector, locking power supply, and mounting hardware
Tech Specifications
| Technical | |
| HDMI Compliance | HDMI 2.1 |
| HDCP Compliance | HDCP 2.3 |
| Video Bandwidth | 48Gbps |
| Supported Input | 2x HDMI Type-A (19-pin female) |
| Supported Output | 4x HDMI Type-A (19-pin female) |
| Audio Output | 1x Optical (S/PDIF), 1x L/R analog (5-pin 3.5mm Phoenix) |
| Control Ports | 1x RS-232 (3-pin 3.5mm Phoenix), 1x IR IN (3.5mm stereo jack), 1x USB-C (Service) |
| Max Resolution | Up to 8K@60Hz 4:2:0 12-bit / 8K@30Hz 4:4:4 12-bit / 4K@120Hz 4:4:4 12-bit |
| Color Depth | 8 / 10 / 12-bit |
| Color Space | RGB, YCbCr 4:4:4 / 4:2:2 / 4:2:0 |
| HDR Support | HDR, HDR10, HDR10+, Dolby Vision, HLG |
| Audio Formats (HDMI) | LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS formats incl. DTS-HD Master Audio |
| Optical Audio Output | Up to LPCM / Dolby / DTS 5.1CH |
| Analog Audio Output | LPCM 2CH (balanced/unbalanced with gain control) |
| Audio Output Level | 8.2 dBu (2 Vrms balanced), 2.2 dBu (1 Vrms unbalanced max) |
| Frequency Response | 20Hz - 20kHz (+0.5 dB / -1 dB) |
| Audio S/N Ratio | 99 dB @ 2 Vrms, 1 kHz (A-weighted) |
| Audio THD+N | <0.2% @ 0 dBV, 1 kHz |
| IR Frequency | Wideband 20kHz - 60kHz |
| IR Input Level | 12Vp-p |
| Mechanical | |
| ESD Protection | IEC 61000-4-2: ±8kV air, ±4kV contact |
| Power Supply | DC 12V / 1A |
| Power Consumption | 6.24W (Max) |
| Housing | Metal enclosure |
| Dimensions | 8.7in x 4.3in x 0.85in [220mm x 110mm x 21.5mm] |
| Weight | 1.4 lbs [620g] |
| Operating Temperature | 32°F to 104°F / 0°C to 40°C |
| Storage Temperature | -4°F to 140°F / -20°C to 60°C |
| Operating Humidity | 20%–80% RH (non-condensing) |
| Storage Humidity | 10%–90% RH (non-condensing) |
Resources
PACKAGE CONTENTS
- 1x 48Gbps 2x4 HDMI 2.1 Distribution Amplifier (BG-8K-24A)
- 1x 12V/1A Locking Power Supply (Multinational)
- 1x IR Remote Control
- 1x IR Wideband Receiver Cable (1.5 m)
- 1x 3-Pin to 3.5 mm Phoenix Connector (RS-232)
- 1x 5-Pin to 3.5 mm Phoenix Connector (Analog Audio)
- 2x Mounting Ears
- 4x Mounting Screws (KM3 x 6)
- 1x User Manual
Interfaces
- POWER Button: Press to power ON the device. Press and hold to enter standby mode.
- POWER LED: Indicates power status. Green = ON, Red = Standby.
- SELECT Button: Cycles through HDMI input sources (IN 1 / IN 2).
- IN LED (1–2): Indicates the currently selected input source. The corresponding LED turns green.
- OUT LED (1–4): Indicates active HDMI output ports. LED lights when a display is detected.
- IR Window: Receives IR signals from the remote control or IR extender.
- EDID DIP Switch: Used to select EDID mode settings based on connected display requirements.
- SERVICE (USB-C): USB-C service port used for firmware upgrades and maintenance.
- IN 1–2 (HDMI): HDMI input ports for connecting source devices (e.g., Blu-ray player, PC, game console).
- OUT 1–4 (HDMI): HDMI output ports for connection to displays such as TVs, monitors, or projectors.
- OPTICAL (S/PDIF): Digital audio output for connection to amplifiers, soundbars, or AV receivers.
- L/R AUDIO OUT: Analog audio output (balanced/unbalanced) with gain control support.
- RS-232: Serial control port for integration with control systems using API commands.
- IR CTL: 12V IR input port for external IR receiver connection.
- DC 12V: Power input port for 12V/1A power adapter.
