Gefen 2x8 HDMI Distribution Amplifier



Recommended replacement: Gefen GTB-HD4K2K-848-BLK
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The Gefen EXT-HDMI-248 is a 2x8 HDMI Distribution Amplifier which allows you to send one or two sources of digital high definition video to multiple displays at the same time. It supports all HDMI equipment, such as DVD players and satellite set top boxes and all HDMI displays. HDMI (High-Definition Multimedia Interface) is a digital point to point interface for audio and video signals. In operation, the digital source is connected to the distribution amplifier on one side. On the other side, eight HDMI outputs are available to be used in part or in full. Once the unit is connected and powered, your source is routed to up to eight digital displays at the same time.

For home theater applications, the DA unit is HDCP (high bandwidth digital content protection) compliant, making it effective for use with all HDMI displays. HDCP is a standard "key" encoded into the HDMI signal to prevent video data from being pirated. HDCP was strongly endorsed by the entertainment industry. If a source device is HDCP coded and is connected to a HDMI display or projector via HDMI without the proper HDCP decoding mechanism, the picture is relegated to "snow" or in some cases, a very low (480P) resolution. In order to see protected content, the source, the display and any device in between must be equipped with HDMI connections that can enable HDCP using "software key" decoding.

Gefen 2x8 HDMI Distribution Amplifier Backside
Gefen 2x8 HDMI Distribution Amplifier Backside

How the Gefen HDMI distribution amplifier works:

Connect your HDMI video source to the 2x8 HDMI Distribution Amplifier's input using the supplied HDMI cable. Then connect up to eight HDMI displays to the unit's eight HDMI outputs. Once connected and powered, your source will be seen on all eight displays at the same time.

Note: HDMI output 1 is the primary connection and is used for the main display. HDMI output 2 through 8 follow the main display. The HDMI displays attached to the 2:8 HDMI Distribution Amplifier MUST have the same native resolution in order to get a picture.

Gefen EXT-HDMI-248 Features:

  • Supports BOTH Audio and Video signals.
  • Switch easily between any two HDMI/DVI sources
  • Outputs are mirrored to eight HDMI/DVI displays simultaneously
  • Maintains high resolution video - HDTV resolutions up to 1080p, 2k, and computer resolutions up to 1920 x 1200
  • Discrete IR remote (included)
  • Serial RS-232 remote port
  • HDMI compliant
  • HDCP compliant

Gefen EXT-HDMI-248 Package Includes:

  • 2x8 HDMI Distribution Amplifier
  • (1) 6 foot HDMI cable
  • RMT-2IR Remote Control
  • 24V External Power Supply
  • Rack Ears

Gefen EXT-HDMI-248 Specifications:

Height 1.75 in. (4.45 cm.)
Width 17 in. (43 cm.)
Depth 5.5 in. (13.9 cm.)
Rack Space 1U
Shipping Weight 8 lbs. (4 kg.)
Supply 24V DC
Consumption 60 Watts (max.)
HDMI type A 19 pin female
Input Signal  
Video 1.2 volts p-p
DDC 5 volts p-p (TTL)
Video Amplifier Bandwidth 1.65 Gbps
Single Link Range 1080p/1920 x 1200