Well, FWIW, it sounds audibly more transparent without the resistor...and it was not bad before.
In some pro audio gear there are resistors across jacks to stop pops when plugging things in...other than that who knows?
It would have been on the input side if the thing had been set up correctly.
I do hate to badmouth this thing because it sounds soooooo much more transparent than the linestage I was using before, which was, trust me, no slouch.
Thanks again for your help.
Louie