Best amp to drive Wilson Yvette’s

Surprised you'd think you need more headroom over what the Pass 250.8 can deliver.  It puts out 250 watts per channel into an 8 ohm load, which doubles to 500 watts per channel into 4 ohms. In stereo, the Luxman m900u by comparison delivers 300Wpc into 4 ohms continuously, although dipping down into 2 ohms the Luxman likely delivers more power than the Pass - but is that really helpful?

I'd vote ARC Ref 75SE as well. Gem of an amp and (relatively) inexpensive 

Maybe I'm totally missing something but how does the ARC Ref 75SE provide the OP with more headroom for the Wilsons than he is currently getting from his Pass 250.8?

Thanks three easy payments. I would have the same question. I moved from tubes (prima luna) to SS (pass labs) due to the fact I could not drive the speakers very loud with the prima Luna. Not sure if I could. I do like tubes, just trying to find the right pairing for the Yvette’s. 

86db with AR REf75 ?