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1x2 HDMI 2.1 Distribution Amplifier, 8K@60Hz 48 Gbps with Audio De-embedder

VLSP-12H21SA

  • 1x2 HDMI 2.1 splitter with 8K@60Hz and 4K@120Hz resolution support

  • Delivers up to 48Gbps HDMI 2.1 bandwidth

  • Includes audio de-embedding with optical and analog outputs

  • Ideal for multi-display environments that demand cutting-edge video and audio distribution

Where to Buy

Product Description

The VLSP-12H21SA is a high-performance 1x2 HDMI splitter designed to distribute a single HDMI source to two displays with exceptional clarity and versatility. Supporting video resolutions up to 8K@60Hz (4:2:0, 12-bit) and data rates of up to 48 Gbps, it is fully compliant with the HDMI 2.1 and HDCP 2.3 standards, making it ideal for next-generation AV applications.

This splitter features advanced EDID management for seamless device compatibility and includes built-in audio de-embedding, offering both optical and analog audio output options for external sound systems. Whether you’re using it for high-end AV installations or gaming with Xbox Series X or PS5, it supports 4K@120Hz playback on supported displays, ensuring fluid performance and ultra-high-definition visuals.

Reliable, flexible, and easy to integrate, the VLSP-12H21SA is a powerful solution for multi-display environments that demand cutting-edge video and audio distribution.

Key Features

  • HDMI 2.1 and HDCP 2.3 compliant

  • Support 48Gbps FRL and 18Gbps TMDS video bandwidth

  • Support resolution up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit

  • VRR, FVA, ALLM supported

  • Support HDR, HDR10, HDR10+, Dolby Vision, HLG pass-through

  • Support HDMI audio formats: LPCM 7.1CH, Dolby TrueHD, Atmos, DTS-HD Master Audio

  • Support audio de-embedding function (output through the optical and analog port)

  • Support resolution auto downscaling and converting on each output port

  • Advanced EDID management

Downloads

VLSP-12H21SA DATA SHEET (PDF)
VLSP-12H21SA USER MANUAL (PDF)

Ideal Applications

Next-Generation Gaming

Perfect for PlayStation 5 and Xbox Series X setups where you need simultaneous output to a gaming monitor and TV. Full support for 4K@120Hz, VRR (Variable Refresh Rate), and ALLM (Auto Low Latency Mode) ensures zero-compromise performance for competitive gaming. Split your signal between a high-refresh-rate monitor for competitive play and a large TV for streaming or spectating.

Premium Home Theater Systems

Distribute pristine 8K content from streaming devices, 4K Blu-ray players, or media servers to multiple displays while extracting audio to your AV receiver or soundbar. Support for Dolby Vision, HDR10+, and Dolby Atmos pass-through ensures you experience movies and shows exactly as the creators intended. The audio de-embedding feature lets you route high-quality 5.1CH surround sound directly to your audio system.

Corporate Conference Rooms

Split presentation sources to a main display for your audience and a confidence monitor for the presenter. Advanced EDID management ensures seamless compatibility with laptops, tablets, and video conferencing equipment from any manufacturer. The auto-downscaling feature means you don't need to worry about display capability differences—the splitter automatically optimizes the signal for each connected display.

Commercial Digital Signage

Designed for reliable 24/7 operation in retail stores, corporate lobbies, restaurants, and hospitality environments. Distribute high-quality 4K content to multiple displays showing synchronized promotional content, menus, or information. The compact metal enclosure and low power consumption (4.5W max) make it perfect for permanent installations behind displays or in equipment racks.

Content Creation & Streaming

Essential for video producers, streamers, and content creators who need to monitor output on multiple displays simultaneously. Connect your primary editing monitor and a client preview screen, or split your gaming/streaming output between a production monitor and a streaming preview display. The resolution auto-downscaling ensures each display receives an optimized signal regardless of native resolution differences.

Specifications

Technical
HDMI Compliance     HDMI 2.1    
HDCP Compliance     HDCP 2.3, HDCP1.4    
Video Bandwidth     48Gbps FRL and 18Gbps TMDS   
Video Resolution     Up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit    
Color Depth     8/10/12-bit    
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

Audio de-embedding output:

Optical: LPCM/Dolby/DTS 5.1CH

Analog: LPCM 2CH    
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]

1 × OPTICAL [S/PDIF]

1 × L/R [3.5mm Stereo Mini-jack]
Control 1 × SERVICE [USB Type C, Update port]
Mechanical    
Housing     Metal enclosure    
Color     Black    
Dimensions     145mm (W) × 68mm (D) × 17mm (H)
Weight    260g
Power Supply    Input: AC 100 - 240V 50/60Hz

Output: DC 5V/2A

(US/EU standard, CE/FCC/UL certified)   
Power Consumption     4.5W (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 8K 4K60 4K30 1080P
HDMI Cable Length

(HDMI IN / OUT) 		2m/6.6ft

(Ultra HDMI 2.1) 		5m/16ft 10m/33ft 15m/49ft
The use of the “Premium High-Speed HDMI” is highly recommended.    

What’s in the Box

  • 1 × 8K HDMI 1x2 Splitter

  • 1 x 5V/2A Multinational Power Supply

  • 1 × User Manual

Frequently Asked Questions

Does the VLSP-12H21SA work with PS5 and Xbox Series X?

Yes, the VLSP-12H21SA fully supports 4K@120Hz gaming with VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode), and all HDMI 2.1 features required for PlayStation 5 and Xbox Series X consoles. This ensures you get the best possible gaming experience with no compromise in performance when splitting to multiple displays.

What is the maximum HDMI cable length I can use with the VLSP-12H21SA?

Cable length depends on your resolution requirements. For 8K@60Hz signals, use Ultra HDMI 2.1 certified cables up to 2 meters (6.6 feet). For 4K@60Hz content, cables up to 5 meters (16 feet) work reliably. For 4K@30Hz or 1080p, you can extend up to 10 meters (33 feet). We recommend using Premium High-Speed HDMI cables for best results.

Can I extract audio to external speakers or soundbar with this splitter?

Yes, the VLSP-12H21SA includes built-in audio de-embedding with two output options: optical output supporting LPCM/Dolby/DTS 5.1CH formats, and analog 3.5mm output supporting LPCM 2CH. This allows you to send video to displays while routing audio to your external sound system, AV receiver, or soundbar.

What's the difference between VLSP-12H21SA and VLSP-12H20?

The VLSP-12H21SA supports HDMI 2.1 with 48Gbps bandwidth, enabling 8K@60Hz and 4K@120Hz resolutions with gaming features like VRR and ALLM. The VLSP-12H20 supports HDMI 2.0b with 18Gbps bandwidth, limited to 4K@60Hz maximum. The 12H21SA is the better choice for next-generation gaming consoles, 8K content, and future-proofing your setup.

Does this HDMI splitter support HDR and Dolby Vision?

Yes, the VLSP-12H21SA supports all major HDR formats including HDR, HDR10, HDR10+, Dolby Vision, and HLG pass-through. This ensures you get the best possible picture quality with high dynamic range content from streaming services, gaming consoles, and 4K/8K Blu-ray players.

Will this work if my two displays have different resolutions?

Yes, the VLSP-12H21SA features advanced EDID management and resolution auto-downscaling on each output port. This means you can connect displays with different capabilities (for example, one 8K display and one 4K display, or a 4K@120Hz monitor and a 4K@60Hz TV) and the splitter will automatically optimize the signal for each display.

Is the VLSP-12H21SA compatible with Apple TV 4K and other streaming devices?

Yes, the VLSP-12H21SA is fully compatible with Apple TV 4K, Roku, Amazon Fire TV, Nvidia Shield, and all other HDMI-equipped streaming devices. It supports all the latest features including 4K HDR, Dolby Vision, and Dolby Atmos pass-through, ensuring perfect compatibility with your streaming setup.

Does this splitter add any lag or latency for gaming?

No, the VLSP-12H21SA has virtually zero added latency and supports ALLM (Auto Low Latency Mode) to ensure the lowest possible input lag for competitive gaming. The splitter maintains the signal integrity and timing characteristics needed for fast-paced gaming on PlayStation 5, Xbox Series X, and high-performance gaming PCs.

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