What amp would be good for the Aerial 7b's

I ran them with a Bryston 4B SST, and then a 14B SST. The 4B SST's protection circuitry kept shutting down after playing the system at high volumes for 45 minutes to an hour. That's why I bought the 14B SST, which seemed to work well.

The 7B do require a lot of juice.

I'm not sure I'd recommend tubes for them. Maybe some 7B owners who use tubes will have some input.

Robert what is your budget?

I have owned Arial's and they love the match of Classe equipment. The option of two amps is optimum-using them bridged in mono. I would look for CA-100's or a CA-150 in stereo. Hope this helps. Steve