What would be good preamp to run McCormick dna1

Hafler DH110. Excellent SQ! Available often for less than $200.

Another good budget choice is the PS Audio 4. I have two! Quite affordable!

I'm driving a recently completely upgraded DNA-1.0 with a Mark Levinson Model 26 preamp. The results are very good. My speakers are a pair of restored German Physiks Borderlands MK1 which like high current SS.       

I had dna1 with rev a mods long ago with Vandersteen speakers. All I can suggest is what I owned with DNA. First was Rouge 99 magnum, BAT vk 5i se and Don Allen preamps. My favorite was the cheapest which was Don Allen, they pop up every once in a while in $500 range used. The Rouge was next with top end NOS tubes. The bat just never seemed to match well, maybe because it sounded more solid state than others to my ears.