AVS Forum Special Member
Join Date: Dec 1999
Location: Big Canoe, GA, USA
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While i've not tried a piece of gear with the new HD, I believe there is zero difference for HDMI. They just changed from RJ-45 connections to a coax cable.
One trick DL3/4 could do on the RJ-45 link was push SACD and PCM independently of HDMI, but on the HD version, all data must flow on the HDMI link and the coax is strictly for the clock-synch.
At the end of the day, what's important is the clock synch, and that's the same between both systems. It is primary a cost reduction and simplification of the DenonLink architecture, both of which make sense to me.