I've never had Tannoys any larger than twelve inch, but in 45 years (off and on) of using them, I have concluded that they are an un-fussy speaker to drive.
I have used an Aragon 300 Wpc SS, Plinius SA 100 MKIII, a factory-upgraded Assemblage Audio SET 300B, a Class D Audio CDA 254L (the last two amps are currently in use), and, to start it all off 45 years ago, a 45 Wpc Kenwood integrated, with 12" Monitor Golds.
In every case the speaker sounded good. Now, with much better ancillary equipment, my current custon HPD 315"s (converted to Hard Edge surrounds, in massive 150 liter, bass-reflex enclosures), are a speaker I happily live with every day, and will do so until my time is up here.
I listen every day for 3-6 hours, without listener fatigue (just old man falling-asleep fatigue).
Tannoys do repond very well with high power, or, in the right circumstances, with quite low power. They are just plain great speakers.
Regards,
Dan