Wow this post was from 2005....
I have original 11L's and have used a marantz 2220b reciever, a marantz 2265b reciever, a sansui au 517 amp, a bryston 3b st, and a nicely upgraded dynaco st 70.
The dynaco st 70 wins hands down in sound quality on the 11L's.
You have not heard how good your 11L's can sound until you run a tube amp into them. The tubes give these speakers a huge deep almost "spooky" soundstage with vocals and instruments. The dynaco also produces a fuller bottom end than even the bryston at lower listenig volumes.None of the ss amps produce the soundstage depth that the tubes can.
Have fun trying different amps.