Pass Labs INT 60 VS. Primaluna Dialogue Premium HP VS. Arcam A49

^"Speculation"?
I don't think that the principles of physics and electrical engineering can be merely disregarded as "speculation". Without the principles of which, this conversation probably wouldn't be happening.

Kenepeters, The only integrated on your short list that actually specs being capable is the T&A. I'm confident that there are a few more. I believe Dan Dagastino'd integrated might qualify.
I haven't heard  all of the vast amount of amps on the market. When I make a short list, I begin by eliminating those that could be technically compromised, and then choose the ones from that list based upon what I just plain like, and of course price/value.

Oops, I meant to add..... We sometimes think that the greatest amount of care goes into show demonstrations, when in reality often times systems are cobbled together at the last minute from borrowing components from local dealers located near the shows.

Charles1dad,  I'm not trying to make this a tube vs. ss debate, even many ss integrateds would be challanged by the sub 2 Ohm load coupled with a difficult phase angle. 

That Wilson says it's ok, doesn't mean that much to me. Speaker manufacturers often say such things so as not to lose sales and embarrass their retailers. What will work, and what will work best are different things.

^^perhaps the Pass int 250 is up to the job?
Though there are a few intergrateds that can handle 2 Ohm loads, that kind of load is typically where separates are called into duty.
^That doesn't make sense to me, perhaps an explanation is in order.

These speakers would appear to be better suited to ss amplification:

http://www.stereophile.com/content/wilson-audio-sasha-wp-loudspeaker-measurements#jIy1PlpdDzduaFvw.9...

Even many ss integrateds might find the sub 2 Ohm load spec challenging. How ever the fairly high sensitivity might mitigate this concern somewhat depending on desired volume output in the given room.

http://www.stereophile.com/content/pass-laboratories-int-60-integrated-amplifier-measurements#ZWJzQw...

http://www.stereophile.com/content/pass-labs-int-150-integrated-amplifier-measurements#I3P9vEMyi85oH...

Jafant, did you notice that both Pass integrateds seemed challenged by 2 Ohm loads?