I have the Focal 1008Be Electra’s as well. I drive them with a 40 WPC AEC/Cary tube amp/preamp and they sound wonderful, in my opinion. Focal’s are fairly efficient.
I have tried them with up to 225 WPC amps and unless I’m trying to have a VERY loud concert, I find that I don’t need anything more than the 40 WPC tubes. They are magical with the tubes. In addition, I do use a separate sub with them.
Cheers, from The Woodlands, Texas