Pass X250.8 > Pass XP22 > bi-wired Vandersteen Quatro CT. Wide and deep soundstage with great imaging in a 14'X16' room with a 5' high knee wall that opens to a eat-in kitchen behind it. The Pass X 250.8 is considered the sweet spot of the lineup of modern Pass class AB amps.
I also ran this amp with Thiel CS2.3 speakers and it controlled these power hungry speakers with ease. Good luck.
Bruce