The HDMI input port is pass through, you don't switch to it. It is there to provide a way to maintain an input to the ARC connection of the TV that the UHD121 needs for ARC output.

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#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
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