What Amp with Sonus Faber Olympica 3?

@samzx12

don’t think so... 8x kt120 in ref110 vs 4x kt150 in ref75se, through same transformers, even with slightly beefed up power supply

https://theartofsound.net/forum/showthread.php?49901-Technical-Differences-Between-KT120-and-KT150-V...

kt150 draws 20% more peak current than kt120 via datasheet (see link above), nowhere near double... and that assumes the power supply can deliver it through the 150...  so double the number of kt120's will still be 70-80% more powerful in transients -- thus i would expect that the ref110 will push and pull harder, greater grip, greater current, esp. with impedance low @ 2 ohms with difficult phase angles in bass region frequencies of the speaker ...

I might be comparing apples to oranges, but FWIW, I tried a GSi75 that took KT150s with Olympica II. The sound was impressive but it just didn't exert much control over the woofers. 

@jjss49  thank you for that comparison and I suppose you are correct. The 110 with more tubes had better control but still not enough as also holds true for the Ref 75SE.  I have read a couple of Olympica 3 reviews where the reviewer used a Ref 75SE and was very satisfied with the combination however, did not really comment about lack of bass. But we can see the O3 needs current down low and typically tube amps can't solve the low impedance issue. 

@samzx12 

You will not get the most out of those Woofers unless you use a High Current Amp. Tube amps are Volts...not High Current (Watts). An amp like the Pass Labs would be a great choice. But you being a ARC fanboy, it will take A LOT of convincing for you to go the best route.

Why Tom why do you hate ARC so much haha?  But I think it is clear as mentioned above I DO understand the O3 needs CURRENT :)