Wireworld Cable Technology, a manufacturer of high-performance audio and video cables, has unveiled a new method for testing the sonic performance of headphone cables. Wireworld Founder and President David Salz has developed what he is calling the Headphone Cable Polygraph, a system that uses a high-resolution music player that’s been adapted to drive headphones directly, without a cable. That direct connection, Wireworld explained, provides a lossless reference that creates listening comparisons, which can then reveal the full effects of different cables.
“I am thrilled to introduce the Headphone Cable Polygraph, which makes it easy to test headphone cables for musical preservation,” Salz said in a statement. “My entire career has been dedicated to developing higher-fidelity cables through better tests, and this one is truly amazing. We now have the opportunity to bring this message to consumers and professionals, raising awareness that adds credibility to high-end audio.”
Wireworld said that tests with the Headphone Cable Polygraph are “much more revealing” than standard cable-vs-cable test comparisons. The latter tests will reveal only the differences between the two cables being compares, the company explained, which is not the same as showing the “full audible effect of other cable.” The only way that a cable’s full effect can be heard is to compare it to a direct connection, according to Wireworld. To do this the company developed custom-made, male-to-male adapters for the reference direct connection that lets listeners identify cable effects more easily than in normal listening tests.
The term “Audio Cable Polygraph” is used by Wireworld to describe any test that compares audio cables to direct connections, the company explained. For example, the reference standard for testing speaker cables is to plug amplifiers directly into the speakers. The same goes for audio components, which can be docked together with the plug adapters to provide a reference standard.