1x4 HDMI 2.1 Distribution Amplifier 48 Gbps

VLSP-14H21S

Data Sheet

User Manual

Product Description

The VLSP-14H21S is a 48Gbps 1x2 HDMI splitter engineered for ultra-high-definition signal distribution from a single HDMI source to two displays simultaneously. Supporting resolutions up to 8K@60Hz (4:2:0, 12-bit) and compliant with HDMI 2.1 and HDCP 2.3 standards, this compact solution delivers cutting-edge performance for next-generation AV environments.

With advanced features like EDID management and cable equalization, the VLSP-14H21S ensures seamless integration and optimal signal quality across connected devices. It also supports 4K@120Hz output—making it an excellent choice for gaming applications with Xbox Series X, PlayStation 5, and high-refresh-rate displays.

Ideal for home entertainment, gaming setups, and small-scale professional AV systems, the VLSP-14H21S offers reliable, high-bandwidth performance in a plug-and-play form factor.

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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     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

(US/EU standard, CE/FCC/UL certified)   
Power Consumption     5.5W (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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