Tube amplifier to power Sonus Faber speakers?

Frontier-

look into ARC, Conrad Johnson and Rogue Audio for your tube needs. Keep me posted and Happy Listening!

Perhaps consider a hybrid amp (tbe/MOSFET) such as the Butler TDB2250 or the Monad. The 2250 has 250 watts/ch. and the Monad is 100 watts/ch. pure class A...

Hi Frontier1, your speakers though advertised at nominal 4ohms, is not showing the whole picture. As the lab test results show in the link, they have an amp hungry impedance with -phase angle load of 1.7ohms in the bass. They maybe efficient but they are a hard load.

This to me says if you want to get the very best out of them, especially in the bass, you need an amp that gives good current, the ability to almost double it's watts down to 2ohms.
EG:
50w into 8ohms
100w into 4ohms
200w into 2ohms
These amps are good solid state with BJT (bipolar) output stages (not mosfet)This is also why even good P/P tube amps will wimp out a little down low, even with 4ohm taps.

http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CC8QFjAC&url=http%3A%2F%2Fwww.perfect-sense.se%2Fwp-content%2Fuploads%2F2014%2F11%2FSF_Olympica-II_Hifi_News_2014.pdf&ei=JN58VIbNE4bc8AXerICgCA&usg=AFQjCNH3FtXaUGr8-3B3--LdKjP2VA7QYA&bvm=bv.80642063,d.dGc

Cheers George

Historical there have been a lot of people who like to match McIntosh with SF speakers. I am not a McIntosh guy, so cannot recommend anything specific. Personally, I would lean towards Conrad Johnson or maybe the big Cary amps with the Olympica. I have not heard anyone of them with those speakers, however.

I have original Cremona and I drive them with a relatively neutral SS amp (Levinson 432) and a tube pre-amp (Cary SLP-05). You should consider that option also.

Georgelofi gives spot on advice and the poster is strongly advised to follow it. You will need a good SS amp for these speakers. Another idea is a good hybrid amp!