8K 1×4 HDMI 2.1 Splitter with Auto Downscaling
48Gbps, HDCP 2.3, HDR?SDR Converting, Dolby Atmos/DTS:X, EDID DIP
Split one 8K HDMI 2.1 source to four displays with automatic downscaling and HDR-to-SDR conversion — enabling mixed-resolution environments without manual configuration. The KanexPro SP-HD1X48K delivers 48Gbps bandwidth and supports resolutions up to 8K@60Hz 4:2:0 12-bit and 4K@120Hz 4:4:4 12-bit across all four outputs. Auto downscaling independently adjusts each output based on connected display capabilities.
HDMI 2.1 and HDCP 2.3 compliant. VRR, ALLM, QMS, QFT, SBTM supported. Full HDR pass-through (HDR10, HDR10+, Dolby Vision, HLG) with HDR→SDR auto converting per output. Audio: LPCM 7.1CH, Dolby TrueHD, Atmos, DTS-HD MA, DTS:X. 8-mode EDID DIP switch. Metal enclosure (145 × 68 × 17 mm, 263 g), 5.5W max, USB-C service port.
- HDCP 2.3 compliant
- Support 48Gbps FRL and 18Gbps TMDS video bandwidth
- Support video resolution up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit, as specified in HDMI 2.1
- HDMI 2.1 protocols: VRR, ALLM, QMS, QFT, SBTM are supported
- Support HDR, HDR 10, HDR 10+, Dolby Vision, HLG pass-through
- LPCM 7.1CH, Dolby TrueHD, Atmos and DTS-HD Master, DTS:X Audio pass-through
- 8K to 4K or 8K/4K to 1080P auto downscaling on all outputs
- HDR to SDR auto converting on all outputs
- Advanced EDID management
- Compact design for easy and flexible installation
| Technical | |
|---|---|
| HDMI Compliance | HDMI 2.1 |
| HDCP Compliance | HDCP 2.3 |
| Video Bandwidth | 48Gbps FRL and 18Gbps TMDS |
| Video Resolution | Up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit |
| Color Space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12-bit |
| HDR | HDR, HDR10, HDR10+, Dolby Vision, HLG |
| Audio Formats | LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD |
| ESD Protection | IEC 61000-4-2: ±8kV (air-gap) & ±4kV (contact) |
| Connection | |
| Input | 1 × HDMI IN [Type A, 19-pin female] |
| Output | 4 × HDMI OUT [Type A, 19-pin female] |
| Control | 1 × SERVICE [USB Type-C, Update port] |
| Mechanical | |
| Housing | Metal Enclosure |
| Color | Black |
| Dimensions | 145mm (W) × 68mm (D) × 17mm (H) |
| Weight | 263g |
| Power Supply | Input: AC 100–240V 50/60Hz, Output: DC 5V/2A (CE/FCC/UL certified) |
| Power Consumption | 5.5W (Max) |
| Operating Temperature | 0°C – 40°C / 32°F – 104°F |
| Storage Temperature | −20°C – 60°C / −4°F – 140°F |
| Relative Humidity | 20–90% RH (Non-condensing) |
| Package Contents | |
| Included | 1 × 48Gbps 1×4 Splitter, 1 × 5V/2A Multinational Power Supply, 1 × User Manual |
What HDMI and HDCP versions?
Maximum resolution?
EDID DIP settings?
Power supply?
No signal on outputs.
Downscaling not working.
Audio extraction?
How does auto downscaling work?
Does HDR-to-SDR affect HDR outputs?
SERVICE port?
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