To point out another obvious one - the tape loop (with monitor switch on/off) is also useful for connecting an EQ in the signal path on any source. Would apply to any effects processing actually. I haven't used them this way in years, but have used them that way with a spectral analyzer with no EQ in the past and it can be at least interesting.
Not suggesting that most people are using tape decks these days, but it still has its utility for some.
Greg
Not suggesting that most people are using tape decks these days, but it still has its utility for some.
Greg