I don't know specifically, but after years of a Luxman CL-32, I put an Audio Research SP-6B in my system and it woke-up.
I always wanted an Audio Research pre-amp, but could not afford one. The old one I got used was in perfect condition and sounds 10x better (more accurate) than the Luxman ever did.
Not sure if that is true with the 2 items you are auditioning, but BUY WHAT SOUNDS BEST IN YOUR ROOM and forget all the "opinions" we have.
Cheers!