How much feedback is being used. What do you know about the transformer windings. I know some from a certain country do about 6 windings. With a machine. Terrible frequency characteristics, but hey, it looks pretty.
Once you are satisfied with "basic" build features such as these and perhaps others will become relevant - tube rectified? choke, any ICs, SET or push/pull, cathode/fixed bias? etc. (SE *may* mean its a SET).
Then what tubes? 300B are a very different beast than EL34s, for example (try to stick with popular tube types such as these).
Other things you might ask about, to get an idea if the vendor has more than 3 neurons - is it a triode, ultralinear, pentode or other type of amp?
I know nothing about brands that come out of a factory. Mine was handmade by an artisan.
Be informed.
Once you are satisfied with "basic" build features such as these and perhaps others will become relevant - tube rectified? choke, any ICs, SET or push/pull, cathode/fixed bias? etc. (SE *may* mean its a SET).
Then what tubes? 300B are a very different beast than EL34s, for example (try to stick with popular tube types such as these).
Other things you might ask about, to get an idea if the vendor has more than 3 neurons - is it a triode, ultralinear, pentode or other type of amp?
I know nothing about brands that come out of a factory. Mine was handmade by an artisan.
Be informed.