Amp+ questions

Very interested in the new Amp+. Several rooms in my home are pre-wired with 8ohm "in-ceiling" speakers. A RPi B+ with Amp+ and Adafruit touch screen (the GPIOs don't clash!) will all fit in a double-gang wall box and could be an interesting home audio solution.

I have 2 questions...
1) The Amp+ has 6 connectors. 4 are obviously for the speakers, are the other two optional power inputs instead of using the barrel plug?
2) The 25W output of the Amp+ I assume is into 4ohm speakers? It that the total output or per channel? What is the per channel output when connected to 8ohm speakers?

Kind Regards


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