From Pass X250,5 to 350,5 : what to expect?


Hi
I am planning on going up from my 250,5 to 350,5 but first decided to ask if it is worth it.Are there any sonic benefits in upgrading to a more powerful amp in a ,5 line?As far as i know in the previous line (250,350)going up meant actually downgrading sound because 250 amp was sonically superior to 350 one.I do not really need more power but i heard that 350,5 is way better soundwise than 250,5.Is that true?Thanks for your insights on this matter.
overhang
Besides more ultimate power, many larger (compared to their lower powered siblings) class A/AB amps will provide more Class A power before sliding into Class AB.
"What to expect?"

Nothing, unless you have really power hungry speakers in a big room.
Better dynamics. I strongly disagree that more power is a bad thing. Unless you only listen to quiet whispy music more power will give you better dynamics which equates to sound that is more like real life.