06-04-09: Rtn1
With all due respect, I do not understand why one would use efficient, tube-friendly speakers and then use a solid state amp.
Rtn1, are you referring to me? If so, I have used tube amps with the Sonata III with unsatisfactory results.
The Sonata III have an impedance curve that dips below 5 ohms. They are not as tube friendly as the sensitivity and nominal impedance suggests. Extensive discussions with Ralph Karsten of Atma-Sphere corroborate this conclusion.
As I mentioned, Alan Yun voices his Silverline speakers with Pass Labs amps. There must be a good reason.