JC1 upgrade to Lamm M2.2 or dartzeel 108B or Ayre?

Lesser known, I heard BSC (Bully Sound Company) class A amps with Harbeth's 30.1. They were awesome.

Ctsooner,

Not to derail this thread, but at the right price, the H30 is a good deal. I am not crazy about the lower end Hegel gear, but that's me.

I have not heard Lamm and JC-1's. I really should so I can comment on them.

I usually prefer a softer/sweeter sound overall, just my personal preference.

I am sure the Ayre 20 series (all versions) is superb. I am afraid to hear the new KX-R Twenty and MX-R Twenty.

Conrad Johnson has always been my go to amazing favorite. Tremendous 3D, multi-layering, totally grain-free and ever so slightly sweet with a wide and deep soundstage.

My Pass Labs XA60.5's is amazing on the 40.1's and I am sure the new Point 8 Pass gear is too. BSC or Bully Sound, and I am sure any Class A gear will be amazing on the Harbeth speakers, as long as the heat will not get you.