Ribbon tweeters...out of favor these days?

Mundofr I read about before about great drivers.

What speakers use Mundof?

These are just starting to be noticed here in the states. Tony Gee of the Netherlands who builds many $$ custom speakers and well known for his webpage humblehomemade hifi uses them and in Europe several use them I have not exactly went on a search I am going by what I have heard personally .My uncle makes
speakers for the Professional studio market and have I have heard all types of combinations .The Mundorf was his favorite and I also agree it has the dynamics of a cone with the speed and openness of a ribbon.

I use Mundorf AMT good transducers

it is all about taste my new speaker has a special hi spec version of Raals best Amprphous Ribbon tweeter which is the Best bar none Ribbon on the Market .The amt tweeter I found has a little more snap on dynamic swings ,but the Ribbon is more open with more ambiance around the instruments it is also better at micro details it is a faster transducer you can't change the laws of physics.
Also the Raal has a huge magnetic structure which is rock stable and if is very well thought out in it's design.
If you ever did manage to break the ribbon a Pencel or a Vaccum cleaner where it don't belong less than a minute to replace,
a frame with the ribbon suspended between it snaps right in and your are back to the music .

Anybody can explain the difference between the original transformer raal and the one with an amorphous core.

I curently in the buying process but I really wonder all the differences between the 3 version...

Normal, AM, DAM

for of all normal versus amorphous core
afterwards AM versus DAM??

Some say the DAM is for direct tube drive.. does this mean you need a special amp? How will it fare with a t-amp or solid state AB amp.. (those amp would need to be transformer coupled?

What type of amp would you recommend for the amorphous core?

I need the best low level listening experience.. so micro/macro details/dynamics is very important.