Lordgorian another tube amp to consider is the Berning zh270. It idles at 70 watts, does NOT have a transformer but uses an impedance converter which is patented. This allows it to be used into low impedance loads where most tubes amps typically start getting into trouble unless they have a LARGE transformer. It also has 3 feedback settings to match to the speaker and taste, great flexibility.
The advantages of this design are lightning speed and clarity like an Output Transformer Less (OTL) tube amp and a great solid state amp, versatility (it has two inputs and a volume control so you can run the source directly to the amp but you don't have to) dead quiet (there is no power transformer but a regulated switching power supply. And it weights only 10 lbs. If you are into big and gorgeous you might want to look elsewhere. It is small and rather homely. I didn't say ugly, but on the other hand it will never bring attention to itself. Form follows function all the way.
The Berning offers the magical presence which tubes are so noted for but it is not euphonic as are some tube amps. It does bass like ss, down to 2hz into an 8 ohm load. Is it tube or ss? And no worry about tube replacement, the outputs are scheduled to last in the 20 year range and cost about 5 bucks each to replace.
It is a tube amp for someone who is afraid of tubes because of the downsides including heat and maintenance. How it will meld with the Perigrines I don't really know but I would think quite well with the 8 ohm nominal impedance of that speaker. 70 watts should be MORE than enough power. If you listen at 105 db on a regular basis you will ruin your hearing so I would stop that at once!!:) New 4.5K. Used, good luck trying to find one.
Have fun in your search. Very nice system btw.
