Neal- As far as I know, DVD-A and SACD do support 5.1, so that there *can* be a dedicated LFE channel.

Keta- As far as bass summing on the analog 5.1 input, the Rotel 1066 does the same thing, just that it does not have the 80 Hz analog crossover, so that you cannot get rid of the "bass doubling." Somewhat "well known" issue with both processors.
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