Marshall |SKU: VMV-402-3GSH

Marshall Electronics VMV-402-3GSH 3G-SDI 4x Switch with Quadview Mode

$1,559.99
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Ships in 7-10 Days

Product highlights

  • 4x1 Seamless Switching
  • Multi-Format Inputs
  • Simultaneous SDI and HDMI Output
  • Quad-View Monitoring
  • Advanced Scaling and Conversion
  • Ethernet and RS232 Control
  • Compact and Rack-Ready

In the box

  • Marshall Electronics VMV-402-3GSH 3G-SDI Seamless 4x Switch with Quadview Mode and Ethernet Control
  • 1U rack-mounting case with ears

Free standard shipping

*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

Free Local Pickup

Please call for store stock availability. Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

Questions? We’re Here to Help

Call or email one of our experts.

Marshall Electronics VMV-402-3GSH 3G-SDI Seamless 4x Switch with Quadview Mode and Ethernet Control

The Marshall VMV-402-3GSH is a robust, high-performance 4x1 seamless switcher designed to meet the demands of broadcast, presentation, and AV environments. Whether you’re outfitting a control room, flypack, courtroom, or classroom, the VMV-402-3GSH delivers professional-grade functionality in a compact 1RU chassis.

This versatile unit supports mixed-format and mixed-frame rate inputs, offering 4 input channels (3G-SDI and HDMI on inputs 1 and 2), and delivers simultaneous output via 3G-SDI and HDMI. The HDMI output also features built-in scaling up to UHD, while the SDI output supports resolutions up to 1080p, making it ideal for both live production and AV integration.

Key Features:

  • 4x1 Seamless Switching – Instantly switch between four sources without interruption, perfect for live events or real-time applications.
  • Multi-Format Input Support – Accepts a wide range of video formats and frame rates, automatically scaled to match selected output.
  • Simultaneous HDMI and 3G-SDI Output – Send a high-resolution signal to both local displays and long-distance transmission setups (up to 100m via SDI).
  • Full-Time Quadview Monitoring – HDMI output supports quad-view monitoring of all four sources, ideal for preview or multi-camera environments.
  • Advanced Scaling – Up/down scaling and frame rate conversion ensure consistent output across devices.
  • Integrated Scopes – Waveform and vector scope overlays provide real-time signal analysis for professional monitoring.
  • Intuitive Control – Configure and control all functions via front panel or Ethernet browser interface, no proprietary app required.
  • Remote Control Integration – Supports control via Ethernet or RS232; compatible with Crestron and similar AV systems.

Suggested Applications:

  • Seamless source switching in remote production or AV installations
  • Format converter for inconsistent input signals
  • Quad source monitoring via HDMI
  • Dual-program output for simultaneous transmission and local preview
  • Courtroom, classroom, and conference environments need professional video management

Shipping & Returns

  • Same Day Shipping


    All orders placed by 1PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

  • Free Standard Shipping


    We offer free standard shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).



  • Easy returns


    If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.


Frequently Asked Questions

How do I return an item?

Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.

Will I receive a full refund when I return an item?

You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.

How many days do I have to make a return?

You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 

My item was damaged in transit. How do I place a return?

If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage. 

There’s an issue with my order, what should I do?

Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.

Can I exchange an item?

We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.

If I ordered a kit, do I have to return all the items?

If you ordered a kit, you must return all components and accessories to receive a full refund.

I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?

If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.

Do you offer repairs?

We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.

What is your return policy?

Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

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