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
pescolar
Finally completed the system for now.

I ended up getting a Von Schwekeirt VR-2 floor stander in maple cabinet.

Now I am trying to adjust the placement of the speaker.
My room size is 13'L x 15' w x 8 'H.
Speaker back wall is about 29" and to side wall is about 38 1/2 ".In between speaker is about 7' 3" and about 8' away or for listening.
So far the sound stage is not huge enough to be satisfactory.

Any member can share input for VR-2 placement in this size of room.
Or good IC's and speaker wire will do justice.

Btw, I am using just regular RCA IC's n speaker wire.May be the next day I should grab some of cables fr my storage.
Thank you all.A'gon members.pescolar