Full disclosure I am a dealer....
We have found the Art Audio Jotas to be a great match for the Nines. You would not believe the amount of deep, tight bass a 300B amp can get out of that small woofer. Yet you still get the midrange magic.
We have not had as good luck with lower-cost tube amps, like Cayin or Jolida (which I really like...just not as good of a match for the Nines).
My 2 cents.
We have found the Art Audio Jotas to be a great match for the Nines. You would not believe the amount of deep, tight bass a 300B amp can get out of that small woofer. Yet you still get the midrange magic.
We have not had as good luck with lower-cost tube amps, like Cayin or Jolida (which I really like...just not as good of a match for the Nines).
My 2 cents.