Gefen 2x8 HDTV Distribution Amplifier



Recommended replacement: Gefen EXT-DVI-148
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The Gefen EXT-HDTV-148 is a 2:8 HDTV Distribution Amplifier is an innovative solution for anyone with more complex computer system requirements, like studios and presentation venues where multi-viewing is essential. It accommodates various system scenarios. Most commonly, two video sources (either DVI-equipped computer, DVD player or satellite set top box) are connected to the distribution amplifier on one side. On the other side, eight video outputs are available to be used in part or in full. Once the distribution amplifier unit is connected and powered, either source is routed to multiple displays at the same time. All displays are driven by one of two sources; each source is capable of driving eight displays at one time. You switch from source one and two via the RMT-2 remote control. The 2:8 HDTV Distribution Amplifier is also equipped with an auto sensing feature that automatically switches to whatever source is active: when one source is inactive it will automatically switch to the active source.

Gefen's 2x8 HDTV DA is also a flexible, expandable distribution hub that sends the same DVI graphics source to eight DVI digital screens (flat panels or projectors). It uses a unique DVI Bus' technology to connect multiple amplifiers without sacrificing a DVI output connection. This HDTV DA is equipped with a ninth output that is an expansion output to be used to daisy chain an additional one to 32 HDTV Distribution Amplifiers.

For home theater applications, the unit is HDCP (high bandwidth digital content protection) compliant, making it effective for use with all HDTV displays. HDCP is a standard "key" encoded into the DVI 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 HDTV display or projector via DVI 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 DVI connections that can enable HDCP using "software key" decoding.

Gefen 2x8 HDTV Distribution Amplifier Backside
Gefen 2x8 HDTV Distribution Amplifier Backside

How the Gefen HDTV distribution amplifier works:

Connect one or two DVI graphics sources to the HDTV DA's two inputs using the supplied DVI cables. Then you connect up to eight DVI displays to the eight DVI outputs on each unit. DVI output 1 is the primary connection and is used for the main display. DVI output 2 through 8 follow the main display.

Note: The DVI displays attached to the 2:8 HDTV Distribution Amplifier MUST have the same native resolution in order to get a picture.

Gefen EXT-HDTV-148 Features:

  • Easily switch between two sources to eight simultaneous displays
  • Connects computers with DVI graphics to multiple DVI compatible monitors or projectors
  • Connects a HDTV source to multiple DVI compatible displays or projectors
  • Maintains high resolution video - HDTV resolutions up to 1080p, 2k, and computer resolutions up to 1920 x 1200
  • Discrete IR remote (included)
  • Supports DDWG standard for DVI monitors
  • Uplink port for easy expansion
  • HDCP compliant

Gefen EXT-HDTV-148 Package Includes:

  • 2:8 HDTV Distribution Amplifier
  • (1) 6 foot DVI cable
  • RMT-2IR Remote Control
  • 24V External Power Supply
  • Rack Ears

Gefen EXT-HDTV-148 Specifications:

Height 1.75 in. (4.45 cm.)
Width 17 in. (43 cm.)
Depth 7.25 in. (18.42 cm.)
Rack Space 1U
Shipping Weight 9 lbs. (4 kg.)
Supply 24V DC 
Consumption 60 watts (max)
DVI DVI-I 29 pin female (digital only)
Remote RJ-45 Shielded
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