Key Digital’s 4K Amplifier Distributes Single Source to Four Zones

Key Digital’s KD-HD1x4ProK is a compact signal distribution solution including features such as audio de-embedding, cascading configuration and HDMI compatibility options.


Key Digital has built a reputation for designing and building bulletproof signal management products for the video market. The latest signal management solution from the N.Y.-based manufacturer is its new KD-HD1x4ProK HDMI Distribution Amplifier

The amp takes a single HDMI source and transmits this signal to its four HDMI outputs. An increasingly valuable feature built into the KD-HD1x4ProK is its audio de-embedder function that removes the audio from HDMI and sends it to external digital or analog outputs. 

Other features built into the product include 4K support, hot-plug detection control that allows installers to choose whether active signal voltage is forced to connected input devices, and a full buffer system that manages TMDS re-clocking/signal regeneration, and HDCP authentication to source and display and EDID control handshakes. 

In addition, the KD-HD1x4ProK also offers dealers the ability to cascade units to configure as many as 64 outputs/displays, and an internal EDID library with 16 default EDID configurations for input, as well as native EDID data for output displays. 

About the Author

Robert Archer
Robert Archer:

Bob is an audio enthusiast who has written about consumer electronics for various publications within Massachusetts before joining the staff of CE Pro in 2000. Bob is THX Level I certified, and he's also taken classes from the Imaging Science Foundation (ISF) and Home Acoustics Alliance (HAA). Bob has also served as the technology editor for CE Pro's sister publication Commercial Integrator. In his personal time beyond his family, he's studied guitar and music theory at Sarrin Music Studios in Wakefield, Mass., and he also studies Kyokushin karate at 5 Dragons and Brazilian jiu-jitsu at Binda Brazilian Jiu Jitsu.


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