Tube Preamp for Solid State Monoblocks?

Hi Guys/Girls of the Hi-fi World

I just acquired the Audio Zone D2 Monoblocks rated at 200wpc and of the Class D variety.

I have been hearing great things about a tube pre and solid state power amp combo and I think this would suit me well.

Any suggestions for a good tube pre (preferably under $700 used or new)?

Also, I already have a little dot MK III, would this be a good match?

Any input is greatly appreciated!