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4×4 Seamless HDMI Matrix Switcher with Multiview & Video Wall

VLML-4x4AM

The VLML-4x4AM is an 18Gbps 4x4 seamless HDMI matrix switcher with built-in multiview, routing four sources to four displays at 4K60 4:4:4 while showing multiple sources on a single screen.
Twelve multiview layouts, from picture-in-picture to quad and custom windows, place up to four sources on one display with per-window input, mode, and aspect control.
A built-in video wall offers ten splicing modes, including 2x2, 1x4, 4x1, and independent Matrix.
Audio embedding and de-embedding, a 4x4 IR matrix, and independent per-source. Controllable from the front panel, IR remote, RS-232, or built-in web GUI.

Product Description

The VLML-4x4AM is an 18Gbps 4x4 seamless HDMI matrix switcher with integrated multiview, distributing four HDMI sources to four HDTV displays at resolutions up to 4K60 4:4:4. Each source can be scaled individually, and seamless switching moves between sources without frame loss.

In multiview mode, twelve layout categories place multiple sources on a single display, with per-window input selection, display mode, and aspect control. The same outputs also drive a video wall through ten built-in splicing modes, from a 2x2 tile to 1x4 and 4x1 strips, plus an independent Matrix layout, selectable from the front panel, web GUI, or RS-232 commands.

Audio is supported both embedded and de-embedded, and a 4x4 IR matrix routes IR control alongside video. HDCP 2.2 compliance, advanced EDID management, and CEC control keep installations stable and interoperable. The unit is controlled from the front panel, IR remote, RS-232, or the built-in web server.

Key Features

HDCP 2.2 compliant with HDMI 2.0 video up to 4K60 4:4:4 at 18Gbps bandwidth
Twelve multiview layout categories including single, PIP, dual, triple, quad, and user-defined windows
Video wall with ten built-in splicing modes: 2x2, 1x2-2, 1x2, 2x1-2, 2x1, 1x3, 3x1, 4x1, 1x4, and independent Matrix
Audio embedding and de-embedding
4x4 IR matrix for routed IR control
Independent per-source scaling and seamless switching with no frame loss
HDMI audio support: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio
CEC control and advanced EDID management
Control via front panel buttons, IR remote, RS-232, and built-in web GUI

Multi-View Mode

The VLML-4x4AM displays multiple sources on a single screen through twelve layout categories: single, picture-in-picture, dual, three triple variants, three quad variants, and three user-defined modes. Single selects one input; PIP adds sub-window size and position control; and the dual, triple, and quad modes add display-mode and aspect selection per window. Layouts can be selected from the front panel, web GUI, or RS-232.

Video Wall Mode

The VLML-4x4AM combines its four outputs into a video wall using ten built-in splicing modes: 2x2, 1x2-2, 1x2, 2x1-2, 2x1, 1x3, 3x1, 4x1, 1x4, and an independent Matrix layout that drives all four screens separately. Modes are selected from the front panel buttons, the web GUI, or RS-232 commands, so the wall can be reconfigured quickly for different content.

Downloads

DATA SHEET (PDF)

USER MANUAL (PDF)

Ideal Applications

Broadcast and production monitoring showing multiple feeds per display with frame-accurate switching
Control rooms needing several sources per screen plus quick video-wall reconfiguration
Bars and hospitality presenting multiple channels per screen across four displays
Boardrooms and huddle spaces combining multiview presentation with tiled wall layouts
Retail and signage mixing multiview content zones with 2x2 or 1x4 video walls
Residential and integration projects using the 4x4 IR matrix to route control alongside video

Specifications

Technical
HDMI Compliance	HDMI 2.0
HDCP Compliance	HDCP 2.2
Video Bandwidth	594MHz / 18Gbps
Video Resolution	480i–1080P@50/60Hz, 4K2K@24/30Hz, 4K2K@60Hz
Color Space	RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0
Color Depth	8 / 10 / 12-bit
Audio Formats	LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio
IR Level	12Vp-p
IR Frequency	Wideband 20K–60KHz
ESD Protection	IEC 61000-4-2: ±8kV (air-gap discharge) & ±4kV (contact discharge)
Connection
Input Ports	4 × HDMI INPUT [Type A, 19-pin female]; 4 × L/R AUDIO INPUT [3.81mm, 3-pin Phoenix Connector]
Output Ports	4 × HDMI OUTPUT [Type A, 19-pin female]; 4 × OPTICAL AUDIO OUT [S/PDIF]; 4 × L/R AUDIO OUT [3.81mm, 5-pin Phoenix Connector]
Control Ports	1 × TCP/IP [RJ45]; 1 × RS-232 [D-Sub 9]; 1 × IR EXT [3.5mm, Stereo Mini-jack]; 4 × IR INPUT [3.5mm, Stereo Mini-jack]; 4 × IR OUTPUT [3.5mm, Stereo Mini-jack]
Mechanical
Housing	Metal Enclosure
Color	Black
Dimensions	440mm [W] × 203mm [D] × 44.5mm [H]
Weight	2.55kg
Power Supply	Input: AC 100–240V 50/60Hz; Output: DC 12V/2.5A (US/EU standard, CE/FCC/UL certified)
Power Consumption	25W (Max)
Operating Temperature	32–104°F / 0–40°C
Storage Temperature	-4–140°F / -20–60°C
Relative Humidity	20–90% RH (non-condensing)
HDMI Cable Length (HDMI IN / OUT)
4K60	5m / 16ft
4K30	10m / 32ft
1080P60	15m / 50ft

The use of "Premium High Speed HDMI" cable is highly recommended.

What’s in the Box

1 × VLML-4x4AM 18Gbps 4x4 Seamless Matrix
1 × 12V/2.5A Locking Power Adapter
5 × 12V IR Wideband Receiver Cable (1.5m)
4 × IR Blaster Cable (1.5m)
1 × RS-232 Serial Cable (1.5m, male to female)
4 × 5-pin 3.81mm Phoenix Connector
4 × 3-pin 3.81mm Phoenix Connector
8 × Machine Screw
2 × Mounting Ear
1 × User Manual

Frequently Asked Questions

What is the VLML-4x4AM?
The VLML-4x4AM is an 18Gbps 4x4 seamless HDMI matrix switcher with built-in multiview, routing four sources to four displays at up to 4K60 4:4:4 while showing multiple sources on a single screen.

How many multiview layouts does it offer?
Multiview provides twelve layout categories, including single, picture-in-picture, dual, triple, quad, and user-defined windows.

What video wall layouts are available?
The video wall offers ten built-in splicing modes: 2x2, 1x2-2, 1x2, 2x1-2, 2x1, 1x3, 3x1, 4x1, 1x4, and an independent Matrix layout.

Can it embed as well as de-embed audio?
Yes. The VLML-4x4AM supports both audio embedding and de-embedding, so audio can be added to or extracted from the HDMI path.

What is the 4x4 IR matrix?
The unit routes IR control in a 4x4 matrix using its IR receiver and blaster cables, letting IR commands reach connected sources or displays alongside video routing.

What video resolution does it support?
It supports HDMI 2.0 video up to 4K60 4:4:4 at 18Gbps and is HDCP 2.2 compliant.

Does it switch sources without dropouts?
Yes. Seamless switching moves between sources without frame loss, and each source can be scaled individually.

How is the VLML-4x4AM controlled?
It can be controlled from the front panel buttons, the included IR remote, RS-232, or the built-in web GUI.