Well your title is a little misleading, you are looking for the best tube amp that fits your system requirements and budget. Your speakers will limit a lot of the "best" tube amp choices, SET's. Not to mention the fact that 'best' is subjective, and will be different in the ears of many different listeners.
So looking at amps that are 50 wpc and up, and under $2000, I would say a Rogue Atlas if buying new, or a Cary V-12 if buying used. Happy hunting.
So looking at amps that are 50 wpc and up, and under $2000, I would say a Rogue Atlas if buying new, or a Cary V-12 if buying used. Happy hunting.