Pure Class A SS vs Tube Amp

It appears that the KLF 30 is actually rated at 102 db/1 watt/1 meter, and given the horn loading of its mid-range and high frequency drivers I suspect that rating is reasonably accurate.

A concern such high efficiency raises is that the noise performance of the amp that is being used becomes especially critical. The hiss levels produced by some amps which may be perfectly fine with say 90 db speakers could very well be bothersome with 102 db speakers.

FWIW I suspect that the solid state Pass XA25 I use would be fine in that regard, as it is extremely quiet with my speakers that are spec’d at 97.5 db. I have no idea, though, how its very transparent and somewhat tube-like sonic character would synergize with the sonics of the KLF 30. But in any event, before settling on an amp it would be prudent, IMO, to try to verify that others have used the particular amp successfully with comparably efficient speakers.

Good luck. Regards,
-- Al

Your speakers dictate what amplifier  type , with tubes youhave so many options true Single ended which is under10 wpc which is the purist , 2 tubes 
any more is a going into class A ,then triode, pentode, tetrode Ultralinear. Even a OTL amps 
it is not that cut and dry  and each power tube type sounds different , 
as well as the small tubes,and rectifier tubes.  That is why everyone likes something to match their Audio taste ,and music type .having several amps
is always a bonus,

@almarg  thanks you’re exactly right is rated 102dB 
I will check pass lab out
my current amplifier parasound A21+ Is 300 WPC at 8 ohms first 6 watts is pure class A sounds really good I’m just wondering what I’m missing i guess I need more class A lol 

Not so. Think of it as an "equation." Amplification on one side, speakers on the other. One does not dictate 'over' the other. They are "codependent."  Hopefully not pathologically so. : )

Your speakers dictate what amplifier  type

I have 100db speakers as well also Klipsch new heritage line. I have tried a SET 300b based tube amp and that sounded wonderful (8wpc, by the way it was a Finale Audio 300b integrated). I have tried a class A SS from Luxman also very nice if not a little too much power (50wpc). I've also used class AB Sansui amps (AU 9900 and AU 5900 totally refurbished) and they were surprisingly good, actually this is a very good match IMO for Klipsch speakers. 

I my experience the biggest issue I have run into with speakers in this efficiency range is usable volume control. You really need to match your amp and preamp together In this regard or you could end up with no usable volume control range. for example If you mismatch the pre-power you could end up with a volume control that turns a few deg only before your maxed out this is an issues because you end up using the very bottom 5% of the volume pot-etc. this is not ideal. 

If you want a tube amp with very good build quality and parts I'd highly recommend Finale Audio -Triode labs out of Toronto they make some very good low powered tube amp and you do not need to spend close to your budget well you could spend it and more but not needed. 

I think someone recommended First Watt another very good choice IMO due to the build quality and low power class A output. 

el34 tube and 45 tube amps  also sound really good with the Klipsch speakers. 

you don't need more then a couple watts, literally 2wpc (that's what you get from the SET 45 tubes by the way) can do it. 

glen