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In Reply to: RE: I'm tired of people running down Audio Note (UK) posted by Peter Qvortrup on August 26, 2015 at 10:42:24
Switching from EI to HiB double C-cores makes a world of difference to my ears. I have heard this on: Meishu vs Meishu Silver, OTO SE vs. OTO SE Signature, Conqueror vs. Conqueror Silver. This step makes everything sound both more real and engaging.
Follow Ups:
Dear Mac,
And the measurable difference is negligible.
Sincerely,
Peter Qvortrup
Aren't there measureable loss differences? From what I have read C cores are about 20% more efficient than the equivalent EI core...this should be pretty measureable.
I have an amp with nice output transformers using big double C cores from JJ (the amp, the JJ 322 is a true sleeper in its sound quality). The output iron is GOSS with laminations only about 0.13-0.15 thick. All made in-house by those former Soviet Block guys (same for the caps). Bass is right up there with the best tube amps I have heard (different in quality from SS so no comparison there really). Extension is good, down 1db at 35Khz. Clarity is just higher than what I hear with similar amps that use EI transformers.
Dear Morricab,
There are, but the frequency response, power output etc. are not much different and certainly not different enough to explain the enormous difference in sound, which is what I meant.
Sincerely,
Peter Qvortrup
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