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Signature Audio 40 - Are these cables cryogenically treated?


Signature Audio 40 cables benefit from a deep cryogenic treatment prior to assembly. The temperature of the cable is gradually reduced over a period of eight hours using liquid nitrogen and kept at a value of -196 8C for a period of 24 hours. Over the next ten hours the cable is gradually brought back to room temperature.

This process eliminates dislocations in the copper microstructure improving its electrical performance. Trumpets and other brass instruments have been found to produce a better tone after deep cryogenic treatment, and it is also used to treat guitar and piano strings for the same reason. Cryogenic treatment of welding electrodes, for example has been shown to improve their current capacity and extend their working life.

Our listening tests showed that the cryo-treated cable was preferred over the same cable without the treatment.