Super thick (1.5 micron) Silver plating is applied directly on the polished
surface of the receptacle and blade and is then polished twice again. A
final plating of Rhodium (0.3 micron) is applied and polished twice again.
A combination of the metals chosen, precisely determined thicknesses of
each layer and and the polishing process determine the overall sonic
quality of the P-037 and C-037.
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