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Single Ended Triodes (SETs), the ultimate tube lovers dream.

You could run that tube in ultralinear mode

If you had the right output transformer... any transformer manufacturer could make one for you.

I've done this in some smaller amps and its worked quite well. If the tap is placed properly you get triode linearity. I think there is merit to this since KT88s are easier to get, are easier to drive and you'll be able to run the amp with less likelihood of hum from the filament circuit.

Regarding driving the tube- a 6SN7 section will do that nicely if AC coupled and class A1. If you are planning class A2 or A3 then you'll need some driving current in the driver- a cathode follower direct coupled to the tube will work very well but you'll need a B- supply to make it work. A 6Sn7 will still work very well for that.

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