Am I the only one who doesn’t love Harbeth P3esr?

@rocray
Ain’t that the truth!

60 hours isn't enough.. The PS Audio amps are class D.. I suggest the Prima Luna's maybe a better match, or a Naim amp.. what speaker cables are you using?? tell us more about room etc..

Alan Shaw, who undoubtedly knows more about Harbeth speakers than anyone else on the planet, has stated that the only break in required is a short period for the flexing (my word) of the rubber surround of the mid bass driver.

  I like tripe. If you don't,you're using the wrong fork.
  
     

The P3s like every other Harbeth speaker develop more bass and a smoother high end as they accumulate hours.
As for the KEF LS50 comparison I owned them and could never get rid of the metallic sound quality although it did minimize. They definitely have more bass than the P3s but are significantly less transparent in the midrange.
The P3s have excellent bass with the right amplifier- don’t be afraid to give them plenty of power- and once run in have detailed and natural sounding treble.  
The midrange is the star though and at times can be startlingly real.