I own the Pass INT25 in a medium sized room driving Fritz Carrera BE's.
They do not require a lot of power. Lotta magic there.
I have heard the newer Luxman INTs. One about $7k and the other $9k.
They are both very musical and likely just as good as the Pass.
The Lux was paired with Paradigm Founder 100. Pure Magic.
Music Lovers in SF.