A decent preamp for Altec 604 speakers

I am addicted to high efficiency speakers. I own Altec 620 monitors (6048G). Outstanding but require very good electronic. The mids tend to magnify poor elements ... Some told me to get a tube preamp... I had a few tube amps in the past and got sick of all the care they need. So I rather go with SS. I need transparency and a very smooth medium. I listen to vinyl, mostly acoustic and electric pop. Up to 1k for a used gear. Thanx.