8K 1×4 HDMI 2.1 Splitter with Audio De-Embedding
KanexPro SP-1X4A8K 8K 1x4 HDMI 2.1 splitter with audio de-embedding. 40Gbps, HDCP 2.3, optical S/PDIF + 3.5mm, 4K@120Hz, VRR/ALLM, 8-mode EDID.
Distribute one 8K HDMI 2.1 source to four displays with built-in audio de-embedding through optical S/PDIF and 3.5mm analog ports. The KanexPro SP-1X4A8K delivers 40Gbps bandwidth and supports resolutions up to 8K@60Hz 4:2:0 10-bit and 4K@120Hz 4:4:4 10-bit. Its audio extraction outputs connect to external amplifiers, soundbars, or powered speakers independently of the display audio. HDMI 2.1 and HDCP 2.3 compliant. VRR, FVA, and ALLM for gaming. Full HDR pass-through (HDR10, HDR10+, Dolby Vision, HLG). Audio pass-through includes LPCM, Dolby TrueHD, DTS-HD Master Audio, DSD. Audio de-embedding: optical supports LPCM/Dolby/DTS up to 5.1CH; analog outputs PCM 2.0. 8-mode EDID DIP switch. Built-in equalizer, retiming, and driver. Metal enclosure (212 × 94 × 23 mm, 539 g), 9W max, Micro USB service port.
- HDMI 2.1 and HDCP 2.3 compliant
- Support 40Gbps video bandwidth
- Support video resolution up to 8K@60Hz 4:2:0 10bit, 8K@30Hz 4:4:4 10bit, 4K@120Hz 4:4:4 10bit
- VRR, FVA, ALLM supported
- Support HDR, HDR10, HDR10+, Dolby Vision, HLG pass through
- Support HDMI audio formats: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-HD Master Audio, DSD
- Built-in Equalizer, Retiming and Driver
- Advanced EDID management (8-mode DIP switch)
- Support audio de-embedding function (output through optical and analog port)
- Compact design for easy and flexible installation
Specifications| HDMI Compliance | HDMI 2.1 |
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| HDCP Compliance | HDCP 2.3 |
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| Video Bandwidth | 40Gbps |
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| Video Resolution | Up to 8K@60Hz 4:2:0 10bit, 8K@30Hz 4:4:4 10bit, 4K@120Hz 4:4:4 10bit |
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| Color Depth | 8/10/12-bit |
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| Color Space | RGB, YCbCr 4:4:4 / 4:2:2, YUV 4:2:0 |
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| HDR | HDR, HDR10, HDR10+, Dolby Vision, HLG |
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| HDMI Audio | LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD |
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| Audio De-Embed (Optical) | LPCM 2/5.1CH, Dolby Digital 2/5.1CH, DTS 2/5.1CH |
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| Audio De-Embed (Analog) | PCM 2.0 |
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| ESD Protection | ±8kV (air-gap) & ±4kV (contact) |
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| Input | 1 x HDMI IN [Type A, 19-pin female] |
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| Output | 4 x HDMI OUT [Type A, 19-pin female], 1 x Optical [S/PDIF], 1 x L/R [3.5mm Stereo] |
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| Control | 1 x SERVICE [Micro USB, Update port] |
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| Housing | Metal Enclosure |
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| Color | Black |
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| Dimensions | 212mm (W) x 94mm (D) x 23mm (H) |
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| Weight | 539g |
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| Power Supply | Input: AC 100-240V 50/60Hz, Output: DC 12V/2.5A (CE/FCC/UL certified) |
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| Power Consumption | 9W (Max) |
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| Operating Temperature | 0°C - 40°C / 32°F - 104°F |
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| Storage Temperature | −20°C - 60°C / −4°F - 140°F |
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| Relative Humidity | 20-90% RH (Non-condensing) |
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| Included | 1 x 8K HDMI 1x4 Splitter, 1 x 12V/2.5A Multinational Power Supply, 1 x User Manual |
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Questions
- What HDMI and HDCP versions?
- HDMI 2.1 and HDCP 2.3.
- Maximum resolution?
- 8K@60Hz 4:2:0 10-bit, 8K@30Hz 4:4:4 10-bit, and 4K@120Hz 4:4:4 10-bit at 40Gbps.
- What are the EDID DIP settings?
- 111=Copy OUT1 (default), 110=1080p 2CH, 101=4K60 2CH HDR, 100=4K60 5.1CH HDR, 011=4K60 7.1CH HDR, 010=8K 2CH HDR, 001=8K 5.1CH HDR, 000=8K 7.1CH HDR.
- Power supply?
- 12V/2.5A multinational adapter included. Max 9W.
- No signal on outputs.
- 1) Verify Ultra High Speed HDMI cables (3m max for 8K). 2) Try EDID DIP 111. 3) Power-cycle.
- No audio from optical/analog.
- 1) Verify cables. 2) Match EDID DIP audio channel setting to your setup. 3) Optical: up to 5.1CH; analog: PCM 2.0 only.
- Does this have auto downscaling?
- No. For auto downscaling use SP-HD1X48K (no audio) or SP-HD1X28K (1x2, no audio).
- What audio formats via optical?
- LPCM 2/5.1CH, Dolby Digital 2/5.1CH, DTS 2/5.1CH.
- What audio via 3.5mm analog?
- PCM 2.0 stereo only.
- Does this support VRR and ALLM?
- Yes. VRR, FVA, and ALLM at up to 4K@120Hz 4:4:4.