Classe CAP 2100 for Maggie 3.6?

Maggies are planar magnetics, not electrostats. They like high current solid state, although some swear by tubes. I have 3.7R's and use Cary 500 MB which are 1000 watts/channel into 4 Ohms. Several others around hear use these amps with 3.6's and 3.7's. I would look for an amp that doubles output from 4 to 8 Ohms, and at least 250 watts/channel into 4 Ohms.
You might provide more information about music preferences, size of room, etc.

The Classe is 200w into 4 ohms. That will be fine with the 3.6's. I use an 85w tube amp with my 3.6's and they sound great. You will love the Maggies but you need to set them up correctly

I listen to mainly jazz trios and simple clean vocals (with acoustic guitar, acoustic piano, bass, etc).
I am planning to set this system up in an approximate 20' x 50' room. The ceiling height I believe is 14 ft. 4' x 5' window on the 50 foot wall. There is a french door on the opposing side of the window. The window is in a recessed (4 ft deep) area. The speakers will be on one end of the 20ft wall (no windows now door on the 20 foot wall). I am planning to put my Classe CAP2100 into good use. It is just collecting dust. The source will be a digital medium. I have several CD/universal players that I can choose from. I will most likely use OPPO BDp 95. It is a Blueray/SACD player that is also collecting dust in the basement.

Looks to me like you will be in good shape. You have a huge room, so you should be able to get the maggies out away from the back wall. I would guess the Classe will be OK at 200 WPC. In my opinion Maggies do very well with vocals and pianos. By all accounts the Oppo is a nice player for the price, so I think you will have a pretty nice rig when you are done.