I have the 970.. You can not rename the inputs. There was a newsletter at one point that said that input naming was going to be a feature, but that was incorrect.
Regards,
Charlie
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Charlie,
Outlaw 970, B&K AV5000, Paradigm Ref 20 and CC (V1), Martin Logan Dynamo, Sony 42" RPTV, Toshiba HD-A1