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

RE: Why waste the time?

"Is there scientific proof that it does?"

Yes.

Here's the short version;

"Norman Crowhurst wrote a fascinating analysis of feedback multiplying the order of harmonics, which has been reprinted in "Glass Audio," Vol 7-6, pp. 20 through 30. He starts with one tube generating only 2nd harmonic, adds a second tube in series (resulting in 2nd, 3rd, and 4th), and then makes the whole thing push-pull (resulting in 3rd, 5th, 7th, and 9th), and last but not least, adds feedback to the circuit, which creates a series of harmonics out to the 81st. All of this complexity from "ideal" tubes that only create 2nd harmonic!"

A single ended amp using a direct heated power triode with no feedback produces very little upper ordered HD. Upper ordered HD is what the human ear objects to.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"



Edits: 12/05/14

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