Best way to go is if your receiver has a pre-out/main in connection.
Actually, it's not. You introduce less noise into the signal path by using the tape monitor circuit. The signal there is at a much higher level than it is at the preamp out because it's tapped
before the voume control which actually attenuates the signal. At the tape out, it's essentially at the level signal would be if the volume control were maxed out.
If you want proof of this, feed the "tape out" into a power amp and be prepared for lotsa noise and perhaps some damaged speakers or ear drums. It would be the same as feeding the output of a CD player (or whatever source) directly into a power amp.
By introducing the eq (and it's inherent noise) into the signal chain at the lower level preamp out stage, it's noise component makes up a higher percentage of the overall signal.
Besides, most units don't have pre out/main in links. Tape monitors are, or at least were, more common. No more now that AVR's have taken over the market. They too are a dying breed.