Monitors for Pass Labs 60 INT

@mdp632 thanks! interesting to note, the same pr also writes "The INT-60 builds upon the INT-30A’s legendary “You are there” soundstage, offering spectacular realism, even with difficult speaker loads such as electrostatics or planars"

Can i suggest the harbeth M30.1 ?is efficient enough to Give juice from pass.

I think you need to move up,the Pass Labs line and buy more watts per channel. All of your favorite speakers, including the Kef's are not going to sound their best with less than 150 wpc at 8 ohm and 275-300wpc at 4 ohm. Anything less than 90 db efficiency is a tough load and probably has an impedance drop below 4 ohm if it is a two way speaker.

You may want to consider Focal's as well .  I drive a pair of 1008Be's with XA100.5 mono blocs with very good results. They are efficient enough where the INT-60 should do fine for most music at reasonable volumes. You may also want to consider the Focal Diablo.