need amplification help for sonus faber amati

Thank you Johnnyb53. There is a lot of good sens in your answer. I will be mooving in some month and will pay attention to have a good listening room.
So far they are standing in a big room and each of the speakers does not have the same distance to the walls on the side. I guess this does not help.
I have been reading the Michael Fremer review, but as you mentioned, I did not know on what amp he did realy like them.
In Europe I found announcements on resonably priced CJ Premier 12 and I wondered If they would still be considered as a having good bass extention and control. I also have been offered to by a ARC VT200 stereo. What is a better choise.
Last thing: how does the preamp influence the soundstage.

For information: I have Cardas golden reference cables (thanks to Microstrip!), a Cyrus 8x CD player with the external power supply.
I mostly listen to classical music , contemporary music, jazz and improvised music, sometimes a nice pop recording or some so called worldmusic.

I guess Guidocorona knows who I am, the mask has fallen. Yes I am the german trombone (posaune) player that lives in Paris you are propably thinking of. (I will send you an email over audiogon to find out who you are and how did you guess.This is not so interesting for the others here.)

About the Rowland D class, I think they are very good but I have the feeling the D class amps, including Rowland, give what I would discribe a liquide sound instead of an airy one. I prefaire more air between the instruments. longer listening seems more tyering to me with the Ds

Concerning the BATs, I have never heard any. What I read is that they are indeed a very good choise for the Amatis, but in a big room I would need the VK-150SEs. Is this true? Those are too expensive for me.
The big room also gives me a little doubt about the souperiority of the CJ premier 12s over the ARC VT200?
I will see if I find a chance to listen to some BATs.

Hallo Douglas,
thank you very much for the review. Those "Pathis" realy look nice and special and I believe thats what they sound like.I will try to find a place to listen to them in Paris, France (they are Italien).Here comes the BUT:
I don't think they work for the Amatis in a big room.
As you reported :
"Gianni made clear to me that the unit was not intended for driving 4-ohm speakers in bridged mode. The unit would handle 8 ohm speakers easily, but was not officially rated for 4 ohms. The concern was to not overwork the transformer. He warned me that pushing the amps too hard could result in damage."
Kusina informed us above here "While the Amatis have a nominal impedance of 4 ohms, they dip down to 2.6 ohms, so you want an amplifier that is stable down to 2 ohms and that has enough power to drive the Amatis."
Thank you any way.

Thank you Douglas,
I do not listen to music on a super loud level, but I do aprechead recordings with little compretion, true double or tripple pianissimos and real fortissimos (for example Mahlers 10th symph. Rattle / Berlin phil., great recording quality!!!). I will try to listen to the Pathos when I get a chance.

The person who is proposing me to by his ARC VT200 will propably have the possibility to bring them, so I can try them in situation saturday. If the result is convincing I will buy those. I can always look for better later.
Of cause I will spend all evening Friday to improve the placement of the speakers.

This does not mean I am not interested anymore in this forum! There are still some unanswered questions:
1.What I read is that they are indeed a very good choise for the Amatis, but in a big room I would need the VK-150SEs. Is this true? Are the VK-75SE to small to have real orchestral fortissimos at some points? Is there anyone in France reading this that can propose a listening with the BATs and any bigger speaker?
2.Does everybody agree with Gregm "The CJ 12s should outperform the AR200". This would be nice since they are cheaper.
3.I also never realy had a chance to listen to a good Acuphase or VAC. Can somebody discribe them a little? Somebody has a precise model in mind?

This is the first time I put a question on this Forum and I aprecheate very much the quality and diversity of the answers. Thank you all very much so far already.

Thank you all so far. This is great help, but I still would like some more information.
(I definately will try to improve the speaker placement.)
In the above recomandations I find some amps that I don't realy like for the reason of personal tast. The Jadis is to colored "tube" for me, the Gryphon and YBA have a little electronic taste to my ears, Nagra is not open enough and FM to slow. I guess I'm a difficult case.
The old KR enterprise VT8000 are suposed to be great. I never had a chance to hear them. Does anybody know if their more recent models are as good? the don't show up in the reviews? They use this strange tube called "Krozilla"!(it seems imposible to find a KR VT8000)
I also never realy had a chance to listen to a good Acuphase or VAC. Can somebody discribe them a little?
Does everybody agree with Gregm "The CJ 12s should outperform the AR200". This would be nice since they are cheaper.
thank you all very much,
Daniel