I was typing along with duddy so I saw his post after I submitted mine...inserts sort of work but the problem is that there is no record level control on the 48...the 48 assumes that the second amp stage, the line amp is on the board. It is there as the channel fader but the INSERT jack is PRE-EQ, PRE-FADE so you rely on your mic pre head amp to try and drive the tape level you want and it'll be weak. Plus if you use the INSERTS then those are not available for anything you'd need those for (i.e. dynamics processing or whatever). So yeah you can do it but it is a serious compromise...
I don't mean to be a downer. I feel bad because you've got this nice new (?) mixer and it really is not designed to accomodate what you want to do, and to be perfectly honest you aren't going to find anything new in that price bracket that will. Can you tell us what you paid and then we can recommend some good options in the used market?
Wow guys, that's a lot of info. I really appreciate it. I've decided that the ZED's going back. It's already boxed. I paid $449 new. I've been looking at some of the vintage Tascam mixer's like the 5A, M-208, M-30, M-308/312. I'll be recording basically one or two tracks at a time, one or two guitars. I don't think I need a 520 or 312. Something small I can take out to that place in jersey for repair. They repaired my 48. Anybody have any ideas which Tascam mixer would be suitable? And thanks again for all the brainstorming.