Marshall Electronics Triple 5" Rackmount LCD Monitor (2 RU) - ML-503

Marshall Electronics  Triple 5" Rackmount LCD Monitor (2 RU) - ML-503

•  Professional Triple-Monitor Solution

• Monitor up to 3 HDMI or 3G-SDI sources simultaneously

• Ideal for control rooms, fly-packs, and mobile studios

• Fits in a compact 2 RU rackmount chassis

•  Three 5" LCD Screens

• Supports up to 1080p60 video

• Each screen has dedicated front panel controlsand headphone ports 

• 170° viewing angle, 460 cd/m² brightness, and 1000:1 contrast ratio for great visibility 

• Adjustable backlight for ambient lighting conditions

•  Comprehensive I/O

• 3x HDMI inputs + loop outputs 

• 3x 3G-SDI inputs + loop outputs 

• Advanced Monitoring Features

• Safe area  and center markers 

• Color tally borders on-screen) to show which feed is live

• Firmware updates via USB port 

• Ethernet control for remote management 

• 2 customizable function buttons for fast access to key settings 

•  Flexible Installation

• Comes with integrated tilting rack ears for optimal viewing angles 

What our Experts Think

Q&A

Q1: What type of display does the ML-503 offer?
A: It features three 5-inch LCD screens in a 2 RU rackmount design, ideal for monitoring multiple video sources simultaneously.

Q2: What is the resolution of each screen?
A: Each LCD delivers high-resolution HD display, providing clear, accurate video monitoring for professional workflows.

Q3: Which input options are supported?
A: Supports HDMI and 3G/HD-SDI inputs, enabling versatile integration with broadcast and AV systems.

Q4: Is it suitable for rack installation?
A: Yes, the 2 RU design fits standard 19-inch racks, making it perfect for studios, OB vans, and control rooms.

Q5: Can it display multiple sources at once?
A: Yes, all three screens can display separate inputs simultaneously, improving monitoring efficiency.

Q6: Are there professional monitoring tools included?
A: Yes, it offers waveform, vectorscope, focus assist, and exposure tools, enhancing precise video control.

Q7: What are typical use cases?
A: Ideal for broadcast production, live events, post-production, and multi-camera monitoring setups.

Q8: Does it support audio monitoring?
A: Yes, it provides audio level monitoring for synchronized audio-video oversight.

Q9: How reliable is it for professional use?
A: Built for continuous operation in professional AV environments, offering durability and consistent performance.

Q10: Why choose the ML-503?
A: It delivers compact, triple-screen monitoring with professional features for efficient multi-source video oversight in rack-based setups.

Maintenance Tips

• Clean Screens Properly
  Gently wipe the triple 5″ LCD panels with a soft, dry microfiber cloth to avoid scratches and maintain full HD clarity. Avoid chemical cleaners.

• Don’t Block Ventilation
  Keep vent holes clear and avoid mounting heat‑producing gear directly beneath to prevent overheating.

• Secure & Inspect Cables
  Regularly check HDMI, 3G‑SDI, loop‑through, tally, and power connections for secure fit to ensure reliable signal and audio output.

• Adjust Backlight & Brightness
  Set backlight and brightness to match ambient lighting for accurate viewing and reduced panel stress.

• Update Firmware via USB
  Use the USB port and thumb drive to apply the latest firmware, which can improve performance and fix bugs.

• Avoid Physical Impacts
  Handle and mount with care—avoid placing the monitor face down or subjecting it to heavy impact.

• Use Stable Power Source
  Connect to a reliable 12 V DC or UPS to prevent interruptions and protect internal circuits.

• Test On‑Screen Tools Regularly
  Periodically verify tally borders, safe‑area/center markers, and audio meters to maintain accurate monitoring.