Kana813, certainly nothing like what is being claimed in this thread! We have found though that if you want tubes to be quiet, you have to do very similar things that the transistor designers do- fully differential, with excellent regulation and 2-stage constant current sources.
We developed a proprietary voltage regulator that gives our supplies some of the best numbers in the business, and to date I think we are the only manufacturer using 2 stage CCS circuits in our differential amplifiers. Plus we have that patented direct-coupled output, a real game-changer :)
Of course the entire preamp is zero feedback and I think we are still the only manufacturer that has sorted out how to do differential equalization, a real game-changer :)
The noise floor on our line stage depends on low noise tubes but is typically in the 100 db range, so its quiet on horns.
Sorry if I am being a bit flippant; when I hear cliches like this sometimes it bothers me, especially when its obvious that the user of said cliches has not seen/heard everything thing out there that might have an innovation in it.
We developed a proprietary voltage regulator that gives our supplies some of the best numbers in the business, and to date I think we are the only manufacturer using 2 stage CCS circuits in our differential amplifiers. Plus we have that patented direct-coupled output, a real game-changer :)
Of course the entire preamp is zero feedback and I think we are still the only manufacturer that has sorted out how to do differential equalization, a real game-changer :)
The noise floor on our line stage depends on low noise tubes but is typically in the 100 db range, so its quiet on horns.
Sorry if I am being a bit flippant; when I hear cliches like this sometimes it bothers me, especially when its obvious that the user of said cliches has not seen/heard everything thing out there that might have an innovation in it.