Pass Labs Int 25 vs Int 60

@kastor77 I would think so unless the room is quite large. Sensitivity specs for speakers are often reported  higher than actually measured under real world conditions. 

I have driven my Esoteric MG-10s with the XA25 in a 12x15' room with no problem. They are 6ohm nominal, drop below 4 ohm somewhere at lower frequency, and 87-88dB sensitive. 

Thank you very much @mesch for your response. My room is 16x23’ and the speakers go down to 3.31 ohm.

According to your experiences, for lower volume listening (55-60dB) would INT-25 be sufficient to drive speakers with sensitivity 91dB at 6ohm?

agree 100% w @mesch

int25 under those conditions is plenty plenty - even 'baby' pass amps are stout into low impedance loads

We all have our favorites.  I found Pass gear too warm and soft sounding.  Also not a fan of the heat and weight of their amps.  Clearly, very well engineered and built components, just not for me.  After a ton of gear over the years, I landed on Ayre. Love their house sound.  Also, like Pass, impeccably designed and made in the USA.

I use my INT-25 With 88dbs Sonus Faber olympica II. It sound so damn good at any volume level. Plenty of power as well