4K UHD 4 Input 4 Output Video Wall Processor and Seamless Matrix Switcher, includes 4 Rx units. Features 5 Video Wall Modes, independent AV routing, mirrored HDMI and UHDoTP outputs.
  • Video Wall Processing: Transform consumer and professional displays into a video wall with five video wall modes: 2x2, 4x1, 3x1, 2 sets of 2x1, 1x4
  • Seamless Switching: Un-interrupted screen transitions during source selection

  • Built-In UHDoTP Tx with PoC: 4 included KD-EXMLVRx units are powered by KD-VW4x4ProK

  • Dual Video Wall / Mirrored Outputs: Simultaneously active HDMI + UHDoTP connections per output show same AV signal at same time for a total of 8 possible displays connected

  • Video Resolution: Up to 3840 x 2160p 4:2:0 at 60fps supported on inputs & 3840 x 2160p 4:4:4 at 30fps supported on outputs

  • Panel Flip: Enables use of consumer displays by mounting top row upside down and conjoining narrow frame sides.

  • Bezel Compensation: Create a fluid screen transition by removing pixels from top, bottom, left and right border independently

  • Video Resolution: Up to 3840 x 2160p 4:2:0 at 60fps supported on inputs & 3840 x 2160p 4:4:4 at 30fps supported on outputs

  • Signal Extension over CAT:

    • 4K/UHD: Up to 35m (115ft) using CAT5e/6, up to 40m (131ft) using CAT6A STP 

    • 1080p: Up to 50m (164ft) using CAT5e/6, up to 60m (197ft) using CAT6A STP 

    • Minimum: 5m (17ft) CAT5e/6 cable length required for all resolutions

  • Text Overlay: Assigned name of each source may be displayed in each window. 16 Characters maximum with variable sizing and location settings.

  • 4K Down-Convert: Integrate 4K sources with legacy 1080p & 720p displays

  • HDCP 2.2 Licensing: Fully licensed and compatible with HDCP 2.2

  • Built-In Test Patterns: 9 selectable test screens help expedite installation

  • IR Extension: Extend IR via Rx units to control displays or collect IR from remote to control a source at matrix 

  • Web UI: Control AV routing and other basic functions from any web browser

  • Audio De-Embed: 6 pin balanced / un-balanced and digital optical outputs

  • Dolby Digital® & DTS™ Audio: Supports 2-channel and multi-channel surround formats up to 5.1 Dolby® / DTS™

  • Full Buffer System™: Manages TMDS re-clocking / signal re-generation, HDCP authentication to source & display, and EDID handshake to source

  • EDID Management: Internal library with 8 EDID AV handshakes per input, in addition to ability to copy from any connected display / output

  • TMDS Re-clocking: Supports long HDMI connectivity using Key Digital® HDMI cables

  • Deep Color Support: Up to 8 bits/color

  • Control: Front panel buttons, IR, RS-232, TCP-IP and Web Control

  • Key Digital® App Ready: Can be controlled over TCP/IP via Key Digital® App

  • Control System Support: Key Digital® app ready. Key Digital Management Software™ Pro (KDMS™ Pro) ready, Compass Control® Pro ready. Fully controllable by all IR, RS-232, and TCP/IP supported control systems via open API.


  • Input (Each): 1 HDMI Connector, Type A, 19 Pin Female
  • Output (Each): 1 HDMI Connector, Type A, 19 Pin Female
  • Output (Each): Balanced/unbalanced line level audio on 6-pin terminal block. Drives 2VRMS line audio input with a sampling rate of 192KHz
  • Output (each): TOSlink optical digital audio following SPDIF format (IEC 60958). Supports sampling rate up to 192KHz
  • Video Bandwidth: TMDS bandwidth 10.2 Gbps
  • DDC Signal (Data): Input DDC Signal - 5 Volts p-p (TTL)
  • HDMI Video/Audio Signal: Input Video Signal - 1.2 Volts p-p
  • DDC Communication: EDID and HDCP Bi-directional buffering to Display and Source
  • Analog Audio Max Output Level: 4dBu on 150kΩ, DC coupling 
  • Audio Bandwidth: 20Hz to 20kHz @ 0dBu 
  • TND + Noise: 0.33% @0dBu @ 1kHz
  • Optical Max Output Level: 1Vpp on 75Ω, DC coupling  
  • Wired IR: modulated IR signal input, 0-5V TTL or -10 to +10V
  • Power: 12V/5A (60W) AC Power Supply with Grounded, 2.1mm ID DC Power Jack with Screw In Type


  • Regulation: CE, RoHS, WEEE 
  • Rack Mount: 1U, 1 Rack Width (rack ears included) 
  • Enclosure: Black Metal 
  • KD-MS4x4G Dimensions: L = 17.24” W = 10.78” H = 1.73” (438 x 237.7 x 44mm) 
  • Shipping Carton Dimensions: L = 19.69” W = 14.72” H = 5.12” (500 x 374 x 130mm) 
  • Product Weight: 8.02 lb / 3.64 kg 
  • Shipping Weight: 13.93 lb / 6.32 kg
  • Accessories: IR Remote, UL Certified Power Supply
  • (1) Power Supply 12V 5A screw-type, model KPS60W12VC
  • (1) KDRMVW44K Remote Control 
  • (4) UHDoTP Rx units, model KD-EXMLVRx
  • (4) IR Emitters with 3.5mm mono end. 6ft
  • (4) IR Sensors with 3.5mm 4 conductor end. 6ft
  • (4) 6-Pin Phoenix connector for audio, blue
  • (1) 6-Pin Phoenix connector for unit control
  • (1) USB data cable, Micro to A, 6ft, USB 2.0
  • (2) Rack ears
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