The ALF-SUK2-8K is an HDMI2.1 splitter, scaler and stabilizer, with one HDMI input and 2 HDMI outputs.
It is Full HDMI 2.1, FRL 48Gbps, and HDR support ensure stable signalling even at the highest bandwidths, HDCP 2.3 compliant. This splitter includes de-embedded audio, scaling, EDID management, and front panel LED indicators for power and signal status.


  • 1, HDCP2.3 compliant
  • 48Gbps Bandwidth (FRL 5)
  • Up to 8K 60Hz 4:2:0/8K 30Hz 4:4:4/4k 120Hz
  • EDID management via 5 pin DIP switcher, with the source through a display’s EDID or internally stored EDID
  • De-embedded audio: 1 x balanced, 1 x Optical, 1 x RCA
  • Downscaling from 8k to 4k or 4k to 1080p to the legacy displayers
  • Device can be updated in the field via USB port


Video Resolution Up to 8K 60Hz 4:2:0/8K 30Hz 4:4:4/4k 120Hz
HDR Formats 420, 422, 444 (10 AND 12 DEEP COLOR) HDR10, HDR10+, DOLBY VISION, HLG
Color Space YUV (Component), RGB

(CSC: Rec. 601, Rec. 709, BT2020, DCI, P3 D6500)

Chroma Subsampling 4:4:4, 4:2:2, 4:2:0 Supported
Deep Colour Up to 16 bit
Scaling By-pass or AUTO Scale & 8k to 8k or 4k, 4k to 1080p
HDMI Audio PCM 2.0 Ch, LPCM 5.1 & 7.1, Dolby Digital, DTS 5.1, Dolby Digital Plus, Dolby TrueHD, DTS-HD Master Audio, DTS-X, Dolby Atmos
COAX LPCM up to 5.1 96KHz 24 Bit, Dolby Digital 5.1, DTS HiRes Audio
Analog (Balanced) PCM 2.0 CH
Analog ( on RCA) PCM 2.0 CH


HDCP Management

Input: HDCP 2.3 and backward compatible
Output: Manageable (Default follow the display).

For example: it will output HDCP 1.4 when source is HDCP 2.3 or 2.2 when connect to HDCP 1.4 display. It will turn off HDCP if display does not support HDCP.

Can turn off HDCP by DIP switch compulsory









Downscale Capability

1: “By-PASS” status: it will pass through whatever from inputs to outputs without any processing
2: “AUTO” Status, rules as below:


2.1 : If the source is 8K, the displayer Max supports 4K, it will downscale to 4K;

2.2 : If the source is 4K, the displayer Max supports 1080p, it will downscale to 1080p;

3: Scale limitation


3.1 : Both outputs will downscale to SAME resolution if 2 outputs on both “AUTO” mode, CAN’T do different resolution on output;


3.2 : Can’t downscale from 8K to 1080p, If the source is 8K, but the displayers, Max supports 1080p, it will have black screen; But, if the source is 4K, the displayers, max support 1080p, it will output 1080p;


3.3 : Can’t support 720p or lower resolutions.

EDID Management Provided when project starts
USB The firmware can be updated