Smart buying buying a preamp with tubes anot avail except as made by preamp manuf?

there is no such amp. amp makers make amps. tube makers make tubes.  next!

Moderators,

You do a fine job deleting threads that contain opinions you disagree with -- yet you allow bullshit topics and threads like this one shoveled by @emergingsoul.  SMFH.

Valid post. No need to mention co name that sells good products, so i didnt share co name.

tubes are a challenging area. 

No amp or preamp manufacture actually makes their own tubes. NONE! So what kind of question is this?

If they use very rare and expensive tubes than it's a good reason to stay away from it.

BillWojo