I hate to say it, but now I think maybe I like my amp in ultralinear mode versus triode

Ralph makes a very good point about the percentage of screen taps and their relationship to the effectiveness of UL operation.  In an earlier post I referred to the original "Musician's Amplifier," the first iteration of the the British Williamson amplifier proposed by Sarser and Sprinkle.  It employed tubes and transformers more readily available on the American market.  In 1952, when Hafler and Keroes published the first "ultralinear" Williamson, Sarser and Sprinkle noticed that the output transformer they chose for the "Musician's Amplifier," the Peerless S-265-Q, had primary taps that could act as 50% loads for the screens.  They urged hobbyists to convert their "Musician's Amplifiers" to "ultralinear" operation by some simple changes to the circuit.

In fact, while the 50% taps of the Peerless transformer are not *ideal*, they actually brought the output tubes just a hair closer to true triode operation while doubling the power output.  Having built this amp myself, I can tell you that the result, despite its flaws, is quite beautiful.

I just took a look at the specs listed in the V12 owner’s manual and under feedback it says "zero."

@immatthewj UL operation is feedback FWIW. To know how much you'd have to compare to pentode operation, which isn't an option...

@atmasphere , I am not arguing with what anyone is saying; I have stated before that I am illiterate on these subjects.  I was simply directly quoting from the owners manual that came with my amp when I bought it.  Although he didn't write it that way, is it possible that what i quoted was meant to only be applied to triode operation?  

I am not arguing with what anyone is saying; I have stated before that I am illiterate on these subjects.  I was simply directly quoting from the owners manual that came with my amp when I bought it.  Although he didn't write it that way, is it possible that what i quoted was meant to only be applied to triode operation?  

@immatthewj I was commenting more in the fact that the manual was either poorly written or misleading. I doubt the 'triode only' thing since it is a UL design. The best interpretation is there's no global feedback. But there certainly is local feedback.

I was commenting more in the fact that the manual was either poorly written or misleading.

@atmasphere , that could be; this subject is over my head so I will not offer an opinion..  As far as the UL design, Mr. Had does state at least a couple of times in that manual how much he likes triode.  He even refers to himself as "a triode crazed audiophile" in that manual and at one point goes on to say that this amp "sounds better" when operated in triode.