Does a tube preamp warm up sound of SS amp?

I'm thinking of getting a SS amp for my Mag 3.6's to get the power I think I need. Would a tube preamp sweeten and warm the sound? I'm leaning toward a Bryston B4 SST2 amp (but nothing definite yet). Any ideas for a tube preamp that might work with it? Are there any conflicts that I should look for with a tube preamp and a SS amp? Eg, impedance issues, etc? Thanks so much for your help. Laurence