Reel to Reel Mods

i recommend asking this question on 'The Tape Project Forum' here;

http://www.tapeproject.com/smf/index.php

Short answer is no. The signal coming off the tape heads is extremely small. It requires quite a boost and probably some de/pre-emphasis before it's up to par as a line output signal. You might be able to tap off the output of the tape head preamp board though.
Follow Mikelaviigne's link for detailed advice if you really want to tackle it.

I think the tape pre in question will provide enough gain to do this. Would there be any other reasons or issues you can think of?