powerful amp to drive ATC 20T 83db

thanks folks.
Lafish, i will be surprised if Quad 606 can really hadle this 20T?
a friend told me that KBA 75 is a good class A amp for ATC 20T? has any one heard of?
BTW, what will be the good IC or speakers cable for ATC?
thanks

Hifying,

I did vertical bi-amping with two symphonic LineRGI, one for mid-tweeter, the other for woofer, and still cannot not reach good result for the woofer? did Clayton can really handle this tough woofer?
i am bout to quite this ATC 20T.....