Kramer VM-4HDT: 1:4 4K60 4:2:0 HDMI to Long-Reach HDBaseT Distribution Amplifier

The Kramer VM-4HDT is a high-performance, long-reach 4K60 HDMI to HDBaseT distribution amplifier designed for versatile AV installations. It accepts a single HDMI input and, with integrated IR and RS-232 control signals, converts and distributes the signal over HDBaseT to four outputs. This enables simultaneous delivery of high-resolution video to multiple displays or projectors while preserving 4K60Hz quality in 4:2:0 color sampling. Built for reliability in educational, corporate, and commercial environments, the VM-4HDT offers a streamlined path from a single source to a multi-display setup, reducing cable clutter and simplifying room configurations. Whether you’re equipping a lecture hall, a boardroom, a digital signage network, or a multi-zone gallery, this distribution amplifier ensures consistent performance, ease of use, and scalable expansion options.

• Powerful 1x4 4K60 HDBaseT distribution: This device takes one HDMI source and replicates it to four HDBaseT outputs, enabling four displays or projectors to show the same 4K60 content with 4:2:0 color sampling. The design emphasizes signal integrity and reliability across multiple outputs, making it ideal for synchronized presentations and uniform video experiences.
• Long-reach HDBaseT transmission: Engineered for extended cable runs, the VM-4HDT pushes HDMI signals farther than standard HDMI cabling allows. This reduces the need for additional repeaters or multiple sources, helping to simplify room layouts and preserve the quality of video and audio across distances appropriate for classrooms, conference rooms, and digital signage networks.
• Integrated IR and RS-232 control: Seamless centralized control is built in, allowing IR and RS-232 commands to pass through and coordinate the source, displays, and other connected devices. This enables smoother, automated presentations and easier integration with room control systems and automation processors.
• Versatile compatibility with HDBaseT receivers: The four HDBaseT outputs are designed to work with compatible receivers such as Kramer TP-580R, providing flexible deployment options for multiple rooms or zones from a single source. This makes it easy to scale the setup while maintaining uniform video distribution and control capabilities.
• Durable, professional-grade design: The VM-4HDT is built to withstand demanding AV environments, with robust connectivity and a compact form factor that fits neatly into rack or shelf installations. Its streamlined cabling and simple configuration minimize installation time and maximize uptime in busy environments.

Technical Details of Kramer VM-4HDT

• HDMI input: 1 x HDMI
• HDBaseT outputs: 4 x HDBaseT (to compatible receivers)
• Video format: 4K at 60 Hz, 4:2:0 color sampling
• Control signals: IR and RS-232 passthrough
• Distribution type: HDMI source to four HDBaseT outputs
• Use case: Long-reach distribution to multiple displays or projectors

How to install Kramer VM-4HDT

• Power down all connected equipment before making any connections to avoid damage or signal issues.
• Connect your HDMI source to the VM-4HDT's HDMI input using a high-quality HDMI cable capable of 4K60 transmission.
• Run four HDBaseT cables from the VM-4HDT outputs to the corresponding HDBaseT receivers located near each display or projector.
• Attach IR and RS-232 control wiring to the appropriate ports if you plan to manage connected devices from a central control system or room controller.
• Power on the VM-4HDT, the HDBaseT receivers, and the displays. If necessary, configure the source to output 4K60Hz to ensure the best image quality across all outputs.
• Verify that each display receives the signal correctly, and adjust any timing or resolution settings in your control system to synchronize playback across screens.
• For multi-room deployments, organize cables neatly and label ports to facilitate maintenance and future expansion.

Frequently asked questions

• What is the Kramer VM-4HDT? It is a 1x4 HDBaseT distribution amplifier that takes one HDMI input and distributes it to four HDBaseT outputs, enabling long-reach transmission of 4K60 content with integrated IR and RS-232 control signals.
• What resolutions are supported? The device supports 4K at 60 Hz with 4:2:0 color sampling, ensuring high-quality video across all four outputs.
• How far can I extend the HDMI signal? HDBaseT enables long-reach transmission beyond standard HDMI cable lengths. Exact reach depends on cabling, connectors, and receivers used, but the VM-4HDT is designed to handle substantial distances in professional AV installs.
• Which receivers are compatible? The VM-4HDT is compatible with Kramer HDBaseT receivers, including the TP-580R, allowing flexible deployment across multiple rooms or zones from a single source.
• Does it support IR and RS-232 control? Yes. The VM-4HDT includes integrated IR and RS-232 control signals to facilitate centralized control of connected sources and displays.
• Is this suitable for classrooms and conference rooms? Absolutely. Its 4K60 capability, long-reach HDBaseT extension, and centralized control features make it ideal for education and corporate AV environments where reliability and scalable distribution are important.
• Can I scale beyond four displays? The VM-4HDT is a 1x4 distribution amplifier, so it directly supports four outputs. For larger installations, you can pair it with additional distribution amplifiers or use compatible HDBaseT matrix/receivers to expand coverage while maintaining centralized control.
• Do I need EDID management? Some setups may benefit from EDID considerations to ensure 4K60 stability across all outputs. If you encounter any display-specific issues, consult your source device’s settings or Kramer technical resources for guidance.
• What environments is it best suited for? The VM-4HDT excels in classrooms, conference rooms, lecture halls, corporate lobbies, digital signage networks, and event venues where a single source must be reliably shared across multiple displays and controlled from a central interface.