owning yvette’s and using with a couple of high end ss amps i’m curious as to your desire for tubes. i tried an ARC Ref 75se, which is a great tube amp, and found it too soft on top and too warm/ripe in bass to be a great fit. regardless i find the speaker to be so musical and sweet on top that a neutral SS amp mates better for me. i prefer the resolution and detail of ss. ymmv