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In Reply to: RE: Gaga posted by 6AS7_6SN7 on February 13, 2012 at 00:52:32
Ok man, I love your amp, best I ever heard (the preamp stinks however) but for you to make that comment ... come on! This the Atma-Sphere forum after all.
the savor of everything - Bob Neill
Lew makes a good point as does 6AS7_6AS7. The Berning, while being a brilliant design, is also not an OTL. An OTL will not have semiconductors and a transformer (whether air core or iron core) in its output, in fact an OTL will not have any impedance matching devices other than the power tubes themselves. The Berning amps fail on all three counts. That does not take away from the amp itself though. Its just that it is simply incorrect to classify it as an OTL.
Berning admitted in a letter to Positive Feedback nearly 15 years ago that his design is not an OTL. His approach allows for Zero Hysteresis in the output transformer (hence the 'ZH' aspect of his model numbers). However he pointed out in his letter that it was difficult to explain the idea of zero hysteresis, but he found that people understood the idea of OTL, so he went with that. Fifteen years of marketing and arguing later, this fact has not changed.
I would challenge you on the preamp comment though: "Oh, no! Don't take me. Wait a little 'till the big Billy Goat Gruff comes. He's much bigger."
Ok for you to say the Atma-sphere preamp "stinks" categorically but not ok for Ralph to say "yup" in response to a post made by a 3rd person who has no conflict of interest either way.
Why would it make you so angry for someone to say simply that he does not think the Berning amp is a true OTL? That argument has been going on for 10 years, and it has no bearing on whether or not the Berning amps sound good, which they do. Oh, and you are, to put it in a genteel way, incorrect as to your opinion of the Atma-sphere preamp. (You are aware that there are two different models, I presume. Do you hate them both?)
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