I echo the concern that a sub-$1000 tube amp might not be the best match for Magnepan's. What amp are you currently use to drive your speakers, and what do you find lacking that makes you want a tube amp?
Some of the better-known amps for powering the Maggies are Innersound/Sandersound amps, but even used you're talking over $1000. Maybe Wyred4Sound would be a good option, or perhaps Odyssey or an older McCormack (DNA-1 or DNA-225). All of these options I've mentioned are SS, by the way.
If you like the sound of the Maggies, and have the appropriate room for them to be positioned optimally, then my suggestion is to save up for an amp that will truly match your speakers. I think you'll be much happier in the long run.
Michael
Some of the better-known amps for powering the Maggies are Innersound/Sandersound amps, but even used you're talking over $1000. Maybe Wyred4Sound would be a good option, or perhaps Odyssey or an older McCormack (DNA-1 or DNA-225). All of these options I've mentioned are SS, by the way.
If you like the sound of the Maggies, and have the appropriate room for them to be positioned optimally, then my suggestion is to save up for an amp that will truly match your speakers. I think you'll be much happier in the long run.
Michael