On Tuesday, January 8, 2019 at 4:34:00 PM UTC-6, wrote:
John-Del:

On a lot of receivers/amps(esp. older ones),
'Tape Out' does mean 'coming from' the
tape/cassette deck, and 'Tape In' means
what is going out of the receiver/amp to
the record deck.

From my own experience.

Agreed --- my vintage Sansui receiver works exactly that way.