What tube amp for Harbeth 40.1


I am looking for a tube amp for Harbeth 40.1.  I know many suggest SS amp such as Accuphase, Luxman, Hegel, McIntosh ... etc for Harbeth, but I decided to keep it with tube.  I also don’t think I need a lot of power.  I currently have a 8W custom built 300B and had a 18W Almarro 318B, and to me, they sound fine.  However, I think more power will help, and I never know what I missed until I try it out.  Having said that, I don’t think I need crazy power.  Anything 30-80W is good enough for me.  I am 3m away from the speakers, listen to Jazz at avg 83dB.

i have the following short list:
1) PrimaLuna Evo 400 integrated
2) Leben CS600X 
3) Linear Tube Audio Z40

Which one do people like with Harbeth?  Any other suggestion?

Among all qualities, I value holographic presentation the most.  I really like the feeling as if the singer is floating in front of me, if you know what I mean.  And my current 300B do pretty well in this regards, and I read this is what SET amps are good at.  Will I be disappointed with the above?
Thanks.
gte357s
@twoleftears i am thinking an integrated.  It is the Z40.  Budget is a concern, bought too many gears within this year already.

@elevick yes, I considered hybrid and seriously look into McIntosh MA252.  I always want a piece of McIntosh, but have been using efficient speakers.  Initially, I think this is my chance to buy a McIntosh with 40.1.  But after doing some research, I am not sure.  MCs are expensive, and it seems a big part goes to the brand.  The MA252 is more affordable, but then some comments says it clips (with the light turns from green to orange) easily even at normal volume.  I don’t think volume is a concern for me, but it seems the quality of the product is not as good as their more expensive amps.  It seems for the money, I can get more from other brands.

@squeak_king_77Thanks for your feedback on Leben.  Based on that, it seems the CS600x may not be suitable for me.  For example, compared to the Almarro and my custom built 300B, I feel the Almarro is more “linear”.  I don’t know if this is the right term.  I feel my 300B is a bit more dynamic, more engaging ... hard to tell exactly what are the differences, it is more a feeling and impression.


I heard good things about atma-sphere.  But  ... it takes many tubes, it would add to the cost.  I am not sure how expensive are the tubes ... 
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