2x8 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)
and engineering support
Overview
The BG-8K-28A is a professional 2x8 HDMI 2.1 splitter designed to distribute ultra-high-resolution video from two HDMI sources to as many as eight displays simultaneously. 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, VRR, ALLM, and HDCP 2.3 for exceptional image quality across modern AV systems.
Engineered for professional installations, the BG-8K-28A combines intelligent input switching, independent output downscaling, HDR-to-SDR conversion, comprehensive audio de-embedding, advanced EDID management, and multiple control options. Whether deployed in digital signage, corporate AV, education, hospitality, or entertainment venues, it provides a flexible, future-ready solution for large-scale HDMI distribution.
Features in Depth
The BG-8K-28A distributes high-bandwidth HDMI 2.1 signals from one of two selectable HDMI inputs to eight simultaneous HDMI outputs. Supporting the full 48Gbps HDMI 2.1 specification, the splitter handles resolutions up to 8K@60Hz (4:2:0, 12-bit), 8K@30Hz (4:4:4, 12-bit), and 4K@120Hz (4:4:4, 12-bit). Full support for HDCP 2.3, HDR10, HDR10+, Dolby Vision, HLG, Variable Refresh Rate (VRR), and Auto Low Latency Mode (ALLM) ensures compatibility with today's most advanced source devices, displays, and gaming systems.
Designed for mixed-display environments, each HDMI output features independent 8K-to-4K or 8K-to-1080p downscaling, allowing displays with different native resolutions to operate simultaneously from a single source. Per-output HDR-to-SDR conversion ensures HDR content is displayed correctly on legacy SDR displays without compromising compatibility. Advanced EDID management with preset, pass-through, and user-defined modes simplifies system configuration while ensuring reliable communication between connected devices. Built-in signal equalization, re-timing, and amplification help maintain signal integrity across long HDMI cable runs.
The BG-8K-28A also provides extensive audio and control capabilities for professional AV integration. Audio can be extracted from the selected HDMI source through optical (S/PDIF) and balanced or unbalanced analog outputs, with adjustable analog gain for integration into amplifiers, DSPs, and distributed audio systems. An integrated HDMI test pattern generator simplifies installation, verification, and troubleshooting, while front-panel controls, the included IR remote, RS-232, and USB-C API support enable seamless integration into automated control systems. Housed in a durable metal enclosure, the BG-8K-28A is designed for reliable 24/7 operation in demanding commercial AV environments.
Features
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![bi_badge-8k]()
48Gbps HDMI 2.1 DistributionSwitches between two HDMI sources and distributes the selected signal to eight 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 seamless mixed-display installations -
![HDR]()
Advanced HDR & Gaming SupportCompatible with HDR10, HDR10+, Dolby Vision, HLG, VRR, ALLM, and HDCP 2.3 for premium image quality and next-generation source compatibility -
![AUDIO DE-EMBEDDING]()
Professional Audio De-EmbeddingExtracts HDMI audio to optical (S/PDIF) and balanced or unbalanced analog outputs with adjustable analog gain -
![EDID Management]()
Comprehensive EDID & Signal ManagementFeatures advanced EDID modes, integrated signal conditioning, and a built-in HDMI test pattern generator for reliable installation and operation -
![Four-Control-Modes]()
Flexible Professional 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 full 48Gbps bandwidth
- Supports resolutions up to 8K@60Hz (4:2:0, 12-bit), 8K@30Hz (4:4:4, 12-bit), and 4K@120Hz (4:4:4, 12-bit)
- Simultaneously distributes one selected HDMI source to eight displays
- Automatic or manual input switching via HDMI 5V detection, front panel, IR remote, or API commands
- Independent per-output HDR-to-SDR conversion for legacy display compatibility
- Individual output scaling supports mixed 8K, 4K, and 1080p display deployments
- Advanced EDID management with preset, pass-through, and user-defined modes
- Built-in HDMI signal generator simplifies installation, diagnostics, and troubleshooting
- Signal equalization, re-timing, and amplification improve transmission stability over longer cable runs
- Adjustable analog audio gain for professional audio integration
- Supports digital optical (S/PDIF), balanced analog, and unbalanced analog audio outputs
- Durable metal enclosure built for continuous 24/7 commercial operation
Tech Specifications
| TECHNICAL | |
| HDMI Compliance | HDMI 2.1 |
| HDCP Compliance | HDCP 2.3 |
| Video Bandwidth | 48Gbps |
| Video 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 I/O) | LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS-HD Master Audio, DSD |
| Optical Audio Output | Up to LPCM / Dolby / DTS 5.1CH |
| Analog Audio Output | LPCM 2CH |
| Output Impedance | 300 Ohm |
| Max Output Level | 8.2dBu (2Vrms) balanced / 2.2dBu (1Vrms) unbalanced |
| Frequency Response | 20Hz-20kHz (+0.5dB / -1dB) |
| Audio Sync Delay | 0-2.2ms |
| Signal-to-Noise Ratio | 99dB @ 2Vrms, 1kHz, A-weighted |
| THD+N | <0.2% @ 0dBV, 1kHz |
| IR Level | 12Vp-p |
| IR Frequency | 20-60kHz (wideband) |
| ESD Protection | ±8kV air discharge, ±4kV contact discharge (IEC 61000-4-2) |
| CONNECTION | |
| Input Ports | 2x HDMI Type-A (19-pin female) |
| Output Ports | 8x HDMI Type-A (19-pin female) |
| Optical Output | 1x S/PDIF Optical |
| Analog Audio Output | 1x L/R (5-pin 3.5mm Phoenix connector) |
| RS-232 Control | 1x 3-pin 3.5mm Phoenix connector |
| IR Control | 1x 3.5mm stereo mini-jack (IR IN) |
| Service Port | 1x USB Type-C (firmware upgrade) |
| MECHANICAL | |
| Housing | Metal enclosure |
| Color | Black |
| Dimensions (W x D x H) | 13in x 3.9in x 0.85in [320mm x 100mm x 21.5mm] |
| Weight | 1.8 lbs [810g] |
| Power Supply | DC 12V / 2.5A |
| Power Consumption | 9.6W (Max) |
| 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 2x8 HDMI Splitter (BG-8K-28A)
- 1x 12V/2.5A Locking Power Supply (Multinational Plug)
- 1x IR Remote Control
- 1x IR Wideband Receiver Cable (1.5m)
- 1x 3-pin 3.5mm Phoenix Connector
- 1x 5-pin 3.5mm Phoenix Connector
- 2x Rack Mounting Ears
- 4x Mounting Screws (KM3x6)
- 1x User Manual
Interfaces
- POWER Button: Press to power on the unit; press and hold to enter standby mode.
- POWER LED: Green indicates powered on; red indicates standby mode.
- SELECT Button: Cycles between HDMI input 1 and input 2.
- IN LED (1–2): Indicates the currently selected active HDMI input source.
- OUT LED (1–8): Indicates active connection status of each HDMI output port.
- IR Window: Receives IR remote control signals.
- EDID DIP Switch: Used to select EDID mode based on predefined DIP settings.
- SERVICE Port (USB-C): USB-C service port for firmware updates and maintenance.
- IN (1–2): HDMI input ports for connecting source devices such as PCs, media players, or game consoles.
- OUT (1–8): HDMI output ports for connecting displays such as TVs, monitors, or projectors.
- OPTICAL (S/PDIF): Digital audio output for connection to amplifiers or audio processors.
- L/R Audio Out: Analog audio output (balanced/unbalanced) with gain control support.
- RS-232: Serial control port for integration with control systems and API commands.
- IR CTL: External IR receiver input for extended IR control.
- DC 12V: Power input connector (12V/2.5A locking power supply).
