Best used preamp for around $1000. . .


I currently own a McCormack TLC-1 Deluxe. I love its sound (or lack thereof) in many ways, but I am finding I really miss they dynamics of active designs. Can anyone give me some good recommendations for used amps around the $1000 price point? Two that obvious come to mind to me are the Adcom GFP-750 and the Musical Fidelity A3 CR, but there must be plenty more!!! Thanks in advance for the ideas. . .
audiolaw
After having repaired my Blue Circle no less than eight times, I purchased a SF Line 1. Not only does it sound far more transparent than the BC21, it has proven to be very reliable. The unit also looks and operates like an expensive preamp ought to.
while i'd still stick the melos sha-gold as my 1st choice, before getting a cary slp50, i'd pony up a few more bucks for their current slp98. won't bust that $1k budget *too* badly if ya get one used, & this is a nice unit, w/future upgradeability...
Sorry for the mistake in model number. The pre-amp is the ALD-1. The DNA-1 is the McCormack amp.