We were wrong!
We're now rolling out Level 2 Cobalt based Amorphous C cores output transformers! Now that is something exotic and special. Cobalt is a rare earth mineral and is highly sought after. They have the sound of their own too that cannot be found using other cores.
Cobalt iron for transformers - this is an alloy that contains Cobalt 35. It is expensive and unusual to be used as output transformers. It has advantages of having very high permeability yet high handling power with saturation limit with a Bmax of ~24000. This equals more sensitivity to changes (micro-details), resulting to refine sound, and with ample reserve to handle high flux (high signal/power). Take a look at the table of its' magnetic properties.
We do not have to say more about Cobalt based output transformers. Just Google for it yourselves.
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| Cobalt based C Cores |
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| Cobalt C Cores |
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| Cobalt Output Transformers |
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| Magnetic Properties |
Notice the Cobalt steel properties? It has highest DC saturation limit and maximum AC operating flux among all the other materials! With reasonable Permeability that is sufficient for audio range operation, it is one of the best material for building output transformers!
Now, scroll to the bottom and fill in the form to order yourself a pair (or a couple of pairs) of Cobalt transformers before they're gone. This rare earth mineral is getting scarce everyday. We do not know when it will run out as there are very little stock left of such high grade materials.
J&K Audio Design
28 August 2014
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