Very good advice from Steveaudio. But it's vital that you match the impedance levels. The tube preamp output impedance must be low. (Many of the newer tube pre's have low outputs).
Matching up speakers and amps
I currently own a pair of Spendor A5's that I am very happy with. They are matched up to a McCormack DNA 0.5 and the Acurus LS11. I am looking to replace one or both and also still debating tubes vs SS. Any opinions as to the Spendors matching up better one way or the other?