Hi,
I am using the Gallo's with a pair of V4's with KT90's. The bass is good but not great and I will buy their bass amp when it becomes available. I have heard the Gallo's with 2 solid state amps, Ayre and Counterpoint, and though the bass was more powerful I thought the midrange was not as good. I think that the right way to use these speakers is with tubes and the SS amp from Gallo when available. Overall, I really like the speakers.
Joe