EDP. sound quality in old machines versus new ones from withinOrville...

[todd reynolds <toddreynolds@rcn.com>]

I've been trying to use my vintage oberheim in a chain with an Eventide
Orville.  Now the orville's a quiet machine, mind you, and I cannot keep 
the
noise out.  No amount of gain structure adjustment actually solves my
problem.   I've done everything I can, or at least know of. .  so here is 
my
question.  Is there any reason to think that a brand new box would have
design improvements which would allow for better fidelity?

or does anyone else have any other suggestions that I'm missing?  Right now
I can't even record because it's just too noisy...  here is my path.

Violin ==Pendulum Audio Preamp ==  In1 of Orville, then  sending out analog
3 of Orville to EDP and back into analog In  3 of Orville ==  then out the
stereo outs of Orville directly.

thanks in advance as always...

t.