I have a client who is interested in the Sonus Faber Serafino. I have not had an opportunity to listen them yet but I’m trying to determine some good preamp power amp matches. My first thoughts were Mac MC301 mono amps but they were too big for the wife. This speaker by spec seems to want a bit of power if he wants to push them to Led Zeppelin levels? If you would kindly suggest some DACpre, single box 2 channel power amp and of course there will be a Nucleus+. As always, much appreciated.