They are virtually identical. Same basic mic element, case etc.
We took over manufacturing this when Heil discontinued his OEM
version suddenly. Apparently he had purchased a group of excess mics
and had replaced the dynamic element with the Electret element.
(Leaving the unused dynamic element unused inside the case.) When he
ran out he suddenly stopped selling them, so we had to locate the
manufacturer of the plastic cases and spec our own custom version.
For our MH2, the only changes were to eliminate the unused dynamic
element left inside the case by Heil, and to improve the foam
mounting for the electret element for better mechanical support.
Overall the two mics sound identical. We've bought a very large
quantity of these and they will be around for some time. :-)
73, Eric
Is the old Elecraft/Heil MD2 plug and play with the K3?
Paul N4LCD
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