Clueless has suggested some good advise that I agree with. With your new speakers you need more wattage like a 300B can provide. Check out other sites for information.
How to pick your first SET tube amp?
I am curious about hearing one of these little amps on some new monitors I got, the Coincident Triumph Signatures. Coincident makes a beautiful pair of SET mono's, but at $3500 they're a little steep for experimenting with. Any recommendations for a good, entry-level pair of SET monos that would give me a taste of what all the fuss is about? I would like to stay at or preferably under $1500. What is the difference between the sound of the EL-34 based SET's and the 300B and other types?