Valve Amplifier suited for my system

the thing to look for is your speakers impedance not just sensitivity, if they are stable at 8 ohms you will have a lot of choices.
Larry

Living Voice are built for valves, sorry tubes and have a benign and flat impedence. I asked Kevin scott who builds them and he said they are built for tube amps, but not flea powered ones. If your favour jazz combos or solo singers, 8 watts will do, 18+ if its Mahler or heavy rock. So 15 watts as you describe, will be in the ballpark. I use a 22watt SET and it is perfect, but high powered SETs are expensive. As you say Art Audio, audio note would be good, the Leben amps are lovely, but the one I heard, a bit base light. If it was me, a VAC Avatar 2nd hand, if I really felt I deserve a present, a Vac Phi betta. I don't think I deserve a present by the way.

Any of the manufacturers you mention have amps suitable for your speakers.

If you are unfamiliar with tube amp topologies (single ended, push pull, triode, pentode etc.), I would suggest you speak to a retailer and audition a couple. If you can get them to let you try in your own home all the better.

Regards and good luck
Paul

If your speakers are 94 db, unless you are in a small room you might want to consider something with 30-60 watts, depending on your listening habits.

My speakers are about 3 db more efficient than yours and I can run a 30 watt amplifier out of gas (but I sometimes listen at higher volume levels to stuff that can have a lot of bass). That 3 db is represents a doubling of the amplifier power, so to do the same thing on your speakers I would need 60 watts.

How about KR audio amps