I have several questions. Is the only difference between the 7700 and the 7500 two channels of power? Also, comparing the 1070 to the 990/7700 combination, is the sound and performance so much superior as to warrant the expense from $1000 to $3000? Lastly, are any new models coming down the pipeline shortly and should I wait or grab the 990/7700 now? Thank you in advance.
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Outlaw 990/7700, Oppo DV-981HD, Gallo S.A.Amp, Nucleus Ref. 3.1, AV C, AV M, TR-2, Paradigm Atom, Pioneer PDP-4214HD, Mtrola DCT6200/2005

Outlaw 990, Aragon 8008X3, 8008, Denon 3930CI, Dahlquist DQ20, Outlaw LFM-1+, Paradigm Atom, Mtrola DCT3416 I