GTB-HD4K2K-444-BLK 4x4 Matrix Ultra Hi-Def Router


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The Gefen ToolBox GTB-HD4K2K-444-BLK is a black 4x4 Matrix Router for Ultra HD. This compact, lightweight, unit is an alternative to rack-mounted matrixes, which allows up to four Ultra High Definition 4K x 2K or 1080p Full HD sources to be routed to up to four Ultra HD displays. Resolutions up to 4K x 2K (3840 x 2160@30Hz). Deep Color, 3DTV pass-through, and lossless audio formats such as LPCM 7.1, Dolby TrueHD, and DTS-HD Master Audio are also supported for your digital signage. Each Hi-Def source can be routed to any of the displays using the front panel push-button controls, the included IR remote, RS-232 serial control interface, or through IP, using Telnet, UDP, and the built-in web server interface. LED indicators on the top panel display the current routing status, FST mode, audio configuration, and EDID settings.

How It Works:

Connect four Ultra Hi-Def sources to the HDMI inputs on the matrix, using HDMI cables. Connect four Ultra HD displays to the HDMI outputs. Connect an Ethernet cable from the network to the RJ-45 connector to use the built-in web server or Telnet/UDP capability to control routing, EDID management, and other functions. The HD sources can now be routed to the displays using the front panel push-buttons, IR remote control, Telnet, UDP, or web server interface.

Features and Benefits:

  • Routes four Ultra Hi-Def sources to four Ultra HD displays
  • Supports resolutions up to Ultra HD 4K x 2K (3840 x 2160 @ 30Hz) and 1080p Full HD
  • Supports 12-bit Deep Color
  • 3DTV pass-through
  • Pixel Clock: 300 MHz
  • Lip Sync pass-through
  • Push button controls for Routing, FST Modes, Audio, and EDID management
  • FST Technology speeds up HDCP authentication process
  • Advanced EDID Management for rapid integration of sources and displays
  • Supports LPCM 7.1, Dolby® TrueHD, Dolby® Digital Plus, and DTS-HD Master Audio™
  • Supports the use of DVI sources and DVI displays with HDMI-to-DVI adapters (not included)
  • RS-232 Serial interface for remote control using a computer or automation control system
  • IP control via Telnet, UDP, and the built-in web server interface
  • IR remote control
  • Field-upgradeable firmware via Mini-USB and IP ports
  • Locking Power Supply
  • Surface-mountable

What is Gefen FST Fast Switching Technology (FST)? FST is a software implemented by Gefenfor HDMI products. FST was created to improve the lengthy HDMI authentication process, based on the HDMI and HDCP specifications. FST allows for connecting/disconnecting or turning any of the HDTV displays on or off without affecting other displays within the audio/video distribution system.


Height 11.9 in. (302 mm.)
Width 6.9 in. (175 mm.)
Depth 1.0 in. (26 mm.)
Weight 6 lbs. (2.7 kg)
HDMI Input Connectors (4) Type A
19-pin female, locking
HDMI Output Connectors (4) Type A
19-pin female, locking
USB Port (1) Mini-B
RS-232 serial port (1) DB-9, female
Ethernet (IP Control) Port (1) RJ-45
IR Extender Port (1) 3.5 mm.
mini-stereo jack
Operating Temperature 32-104 °F
(0-40 °C)
Power Consumption 13 watt (max.)
Power Supply (included) 5V DC, Locking type
Power Indicator (1) LED, blue=On, red=Standby
UPC / EAN Barcode icon
UPC 845344081410
EAN 0845344081410