1x2 HDMI 2.1 Distribution Amplifier 48 Gbps

VLSP-12H21S

Data Sheet

User Manual

Product Description

The VLSP-12H21S is a 48Gbps 1x2 HDMI splitter designed to deliver ultra-high-definition video from a single HDMI source to two displays simultaneously. Supporting resolutions up to 8K@60Hz (4:2:0, 12-bit) and fully compliant with HDMI 2.1 and HDCP 2.3 standards, this splitter provides the bandwidth and performance required for next-generation AV systems.

Engineered for integration flexibility, it features advanced EDID management and cable equalization to ensure reliable signal quality across both outputs. Its high refresh rate support makes it ideal for gaming setups, providing smooth 4K@120Hz playback for Xbox Series X, PlayStation 5, and compatible displays.

Compact, powerful, and easy to deploy, the VLSP-12H21S is a go-to solution for premium home entertainment, high-performance gaming, and professional AV environments requiring robust dual-display distribution.

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Featured Highlights

  • HDMI 2.1 and 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

  • 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

Specifications

Technical
HDMI Compliance     HDMI 2.1    
HDCP Compliance     HDCP 2.3    
Video Bandwidth     48Gbps   
Video Resolution     Up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit    
Color Depth     8/10/12bit    
Color Space     RGB, YCbCr_4:4:4, YCbCr_4:2:2, YCbCr_4:2:0    
HDR     HDR, HDR10, HDR10+, Dolby Vision, HLG    
Audio Formats     HDMI input/output:

LPCM, Dolby Digital/Plus/EX, Dolby True HD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD
ESD Protection     Human body model — ±8kV (Air-gap discharge) & ±4kV (Contact discharge)    
Connection    
Input 1 × HDMI IN [Type A, 19-pin female]
Output     2 × HDMI OUT [Type A, 19-pin female]
Control 1 × SERVICE [USB Type C, Update port]
Mechanical    
Housing     Metal enclosure    
Color     Black    
Dimensions     95mm (W) × 68mm (D) × 18mm (H)
Weight    177g
Power Supply    Input: AC 100 - 240V 50/60Hz

Output: DC 5V/2A

(US/EU standard, CE/FCC/UL certified)   
Power Consumption     4.3W (Max)    
Operating Temperature     32 - 104°F / 0 - 40°C
Storage Temperature    -4 - 140°F / -20 - 60°C
Relative Humidity    20 - 90% RH (No condensation)
Recommended HDMI Cable
Video Resolution 8K60 4K60 1080P
HDMI Cable Type Ultra HDMI 2.1 cable HDMI 2.0 cable HDMI cable
HDMI Cable Length

(HDMI IN / OUT) 		2m/6.6ft ~ 3m/10ft 8m/26ft 15m/49ft
The use of the “Premium High-Speed HDMI” is highly recommended.    

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