Marshall Electronics Quad 4.5" Rack-Mountable Monitor Unit with 3G-SDI, HDMI & Composite (2 RU) - ML454V2
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Designed for Fly-Pack, Studio, or Truck Use
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Perfect for broadcast setups needing compact, high-quality multi-source monitoring
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Quad 4.5" High-Res LCD Screens
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Four 1280 x 720 resolution TFT LCD panels
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16:9 aspect ratio with excellent off-axis viewing
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Adjustable backlighting for different ambient lighting conditions
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Panels can be matched and calibrated with long-term consistency
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Versatile Input/Output Options
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4x HDMI inputs
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4x 3G-SDI inputs with loop-through outputs
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4x Composite (CVBS) inputs with loop-through outputs
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Stereo RCA audio inputs
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Headphone output for monitoring
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On-Screen Tally Displays
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Red, green, and yellow tally borders for quick visual status feedback
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Advanced Display Tools
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Center markers and safety markers
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Selectable aspect ratios
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Image flip, focus peaking, and other imaging aids
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Durable Rack-Mount Design
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2 RU metal housing with integrated rack ears
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Built for rack-mounted or standalone configurations
What our Experts Think
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Four Independent 4.5″ LCD Panels in 2 RU
Quad displays provide simultaneous monitoring of multiple feeds in a compact rack form factor, ideal for studios and live production racks.
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Flexible Multi‑Format Inputs
Each screen accepts 3G‑SDI, HDMI, and Composite (CVBS), making it compatible with a wide range of professional and legacy video sources.
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Active Loop‑Through on SDI & CVBS
Built‑in loop outputs on SDI and composite simplify daisy‑chaining signals to other monitors or recorders without extra hardware.
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Bright, High‑Resolution Displays
Each 4.5″ panel delivers 1280×720 resolution with a bright LED backlight and wide viewing angles for clear visibility from various positions.
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On‑Screen Tools and Tallies
Includes 3‑color tally indicators and image controls to assist operators in live production and multi‑camera environments.
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Rack‑Ready Reliability
Slim, 2 RU metal housing and DC power support (10–24 V) make it suitable for flypacks, OB vans, control rooms, and broadcast racks.
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Expert Verdict
A versatile, professional quad rack monitor that delivers flexible connectivity, dependable performance, and crisp multi‑source viewing—perfect for broadcast, technical monitoring, and AV workflows.
Q&A
Q1: What is the display configuration of the ML454V2?
A: It features four 4.5-inch LCD screens in a 2 RU rackmount unit, allowing simultaneous monitoring of multiple video sources.
Q2: What input types are supported?
A: Supports 3G-SDI, HDMI, and composite inputs, offering flexible connectivity for a wide range of video sources.
Q3: Can it display multiple sources simultaneously?
A: Yes, each screen can display independent video signals, making it ideal for multi-camera monitoring.
Q4: Is it suitable for rack installation?
A: Yes, the 2 RU rackmount design fits standard 19-inch racks for studios, OB vans, and control rooms.
Q5: Are professional monitoring tools included?
A: Yes, features include waveform, vectorscope, focus assist, and exposure tools for precise video analysis.
Q6: Can it handle audio monitoring?
A: Yes, it supports embedded audio monitoring for SDI and HDMI sources.
Q7: What are typical use cases?
A: Ideal for broadcast production, live events, post-production, multi-camera monitoring, and control room applications.
Q8: How reliable is it for professional use?
A: Built for continuous operation in professional AV environments, ensuring stable performance and durability.
Q9: Does it support multiple video formats?
A: Yes, it handles HD-SDI, 3G-SDI, HDMI, and analog composite, ensuring compatibility with modern and legacy systems.
Q10: Why choose the ML454V2?
A: It provides compact, high-density monitoring with versatile inputs and professional features, ideal for efficient multi-source video oversight in rack-based setups.
Maintenance Tips
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Clean Displays Carefully
Use a soft, dry microfiber cloth to wipe the four 4.5″ LCD panels—this preserves vivid 1280×720 screens without scratching or damaging the adjustable LED backlights.
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Keep Ventilation Clear
Ensure rack vents and adjacent equipment don’t block airflow to avoid heat buildup during extended monitoring sessions.
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Inspect & Secure Video Cables
Regularly check 3G‑SDI, HDMI, and composite (CVBS) cables/connections to prevent signal loss and maintain reliable loop‑through outputs.
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Stable Power Supply
Use a reliable 12 V DC source or UPS to protect the unit and maintain consistent performance.
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Avoid Physical Impact
Handle the monitor gently during installation and service—LCD panels are delicate, and impacts can affect calibration.
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Manage Cable Slack When Tilting
Allow sufficient cable slack to prevent strain on connectors when adjusting rack tilt angles.
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Regular Input Selection Checks
Cycle through HDMI/SDI/CVBS sources to verify each input channel is working and free from intermittent issues.
