@charles1dad the amps sounded wonderful out of the box. If anything, they are more cohesive now. The treble settled down and bit and, especially with the KRs, the bass is fuller. As we discussed, I am concerned about the XLS higher voltage requirements, but you and @cal3713 are both using them with no ill effects, so they must be an acceptable option. As much as I want the Takatsukis, I simply don't have the money for them. I wonder if the ones sold by Partsconnexion are seconds or ones that don't measure as well. I am particularly drawn to the the Psvanes sold by Israel and the EMLs because both come with generous warranties, especially the EMLs.