4K Ultra HD 8×8 Matrix for HDMI

Route 8 4K Ultra HD sources to 8 diplays with HDCP, 3DTV and 7.1 channel LPCM and HBR support


The Gefen GTB-HD4K2K-8482-BLK ToolBox 8×8 Matrix for HDMI is a compact and lightweight alternative to rack-mounted matrixes. This HDCP 1.4 compliant matrix routes eight Ultra HD sources to any eight 4K Ultra HD displays with HDMI inputs. The Gefen Syner-G software’s Discovery and Show-Me features simplify initial IP configuration of this matrix. Each source can be routed to any display location, using the front-panel push buttons or the included handheld IR Remote Control. The matrix can also be controlled via RS-232, Telnet, UDP, and the Gefen intuitive and easy-to-use web server interface. An easy-to-read backlit front panel display indicates the current routing status and IP settings.

Video Support

Resolutions supported include 4K Ultra HD (3860 x 2160 at 60 Hz, 4:2:0 color space), 4K DCI (4096 x 2160 at 24 and 30 Hz), 1080p Full HD, and 1920×1200 (WUXGA). This HDCP compliant matrix also supports Deep Color and 3D signal.

Audio Support

multichannel digital audio including 7.1 channels of LPCM and HBR (High Bit Rate) lossless formats are also passed through.


  • Maximum Pixel Clock: 300 MHz
  • HDMI Input Connectors: (6) Type A 19-pin female, locking
  • HDMI Output Connectors: (2) Type A 19-pin female, locking
  • Digital Audio Outputs: (2) TOSLINK®
  • USB Port: (1) Mini-B
  • RS-232 serial port: (1) DB-9, female
  • Ethernet (IP Control) Port: (1) RJ-45 jack
  • FST Selector: (1) tact-type, recessed push-button
  • Audio Selector: (1) tact-type, recessed push-button
  • EDID Selector: (1) tact-type, recessed push-button
  • Routing Selectors: (2) tact-type push-buttons
  • Power Indicator: (1) LED, blue
  • FST Indicators: (2) LED, green
  • Audio Indicators: (2) LED, green
  • EDID Indicators: (3) LED, green
  • Routing Indicators: (12) LED, green
  • IR Sensor: (1), on front panel
  • R Extender Port (Receiver): (1) 3.5mm mini-stereo jack
  • DC Power Connector: (1) Locking type
  • Power Supply: 5V DC
  • Power Consumption: 20 Watts (max.)

Other Specifications

Shipping Info
  • Length20 (Inches)
  • Width12 (Inches)
  • Height5 (Inches)
  • Weight6.8 (Lbs)
  • UPC888814217599
In The Box
  • 4K Ultra HD 8×8 Matrix for HDMI (GTB-HD4K2K-848-BLK)(1)
  • IR Remote (RMT-848IR)(1)
  • 24V DC Power Supply (EXT-PS24U375A-6)(1)
  • AC Power Cord (CAB-POWERCORD-XX)(1)
  • Quick-Start Guide (QSG-GTB-HD4K2K-848-BLK)(1)


2 year product warranty

Please see the Gefen warranty page for more details