Best Tube Pre-amp to match THRESHOLD 4000 S/S amp

Fellow A'Gon member,I am searching for tube pre-amp to mate for my Threshold 4000 class A amp...a limited budget of $1,500.
Here are the gears I have in my possesion now:

Threshold 4000 amp
Jolida 100 cdp (tube)
KImber Kable 8tc (speaker wire)
Harmonic Tech Truthlinks ( IC )

And future monitor speaker are either Proac or Dynaudio.

Btw my 1st choice pre-amp:

Cary Slp-98 or Audio Research but less knowledge still of matching output impedance ( pre) to input impedance (amp).

PLEASE ADVISE TO AVOID MISTAKE.THANKS.PESCOLAR