I well remember Classe paired up with big B&W 800s and also remember thinking the Classe sound was rather musical, not so detailed and bright as many, hence why it could work with the semi-bright B&Ws and that diamond tweeter. A lean amp will keep you out of the room so caution is advised.
Have fun with those new-to-you speakers. They are great speakers without a doubt and with the right components they'll be enjoyable for a long time!