Foundation 4K UHD Processor
Connecting the Foundation 4K UHD to Your System
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The Foundation 4K UHD is equipped with 10 HDMI inputs. Four of the HDMI Inputs include HDMI 2.0 with
HDCP 2.2 decryption for use with the latest in video content. For older video sources, the Foundation 4K UHD
includes 3 component video inputs, and 2 composite inputs. We recommend that you use the HDMI connections
to the Foundation 4K UHD, wherever the video source and video monitor both feature HDMI connections.
Video outputs include 2 HDMI outputs. Both HDMI outputs include Audio Return Channel. Audio Return Channel
transfers audio from a TV back to the Foundation 4K UHD processor allowing TV audio listening through your
home theater system. The TV must be equipped with Audio Return Channel functionality for this feature to work.
This section provides information about connecting the Foundation 4K UHD to your system.
Follow these steps to connect the Foundation 4K UHD to your system:
1. Make sure all power sources and components are off before connecting inputs and outputs.
2. Neatly arrange and organize wiring to and from the Foundation 4K UHD and all components. Separate AC wires
from audio cables to prevent hum or other unwanted noise from being introduced into the system.
The Foundation 4K UHD is equipped with balanced and single ended inputs. Krell recommends using balanced
interconnect cables. Balanced interconnect cables not only can minimize sonic loss but also are immune to
induced noise, especially for installations using long cables. Balanced connections have 6 dB more gain than single
ended connections. When level matching is critical, keep this specification in mind. Krell recommends that you use
balanced inputs for components that will use the preamp mode.
For stereo analog input sources, connect the right and left outputs of your source components to the inputs on the
Foundation 4K UHD. The Foundation 4K UHD is equipped with four sets of single-ended analog audio inputs (S-1
through S-4) via RCA connectors and one set of balanced analog audio inputs via XLR connectors.
The Foundation 4K UHD is equipped with three coaxial digital audio inputs via RCA connectors and three digital
EIAJ optical inputs via TosLink connectors. Connect the digital audio output of your source components to the
digital inputs on the Foundation 4K UHD.
The Foundation 4K UHD is equipped with a second audio zone. Two different sources may be played
simultaneously. Additional wiring is not required as all digital sources, including HDMI based audio, are fed to the
Zone 2 analog outputs.
