Tommy, I have looked at the manual and read some blurbs on the Marantz. I would contact Marantz technical support. I do not think this has the typical " tape monitor " loop as yesteryear, this is why I suggest contacting them. A true tape monitor loop, as mentioned above, would give you the ability to monitor, and compare, the source being recorded, before and after, during the recording process ( a three head tape deck would have been necessary ). A tape monitor circuit ( button ) would need to override the source, enabling them to work, together, as opposed to instead of. To route the tt into the eq, you would require a separate phono section from tt before the eq. Hope it works out for you. Enjoy ! MrD.