These are 3 wire TRS connectors. The DuKabel 3.5mm appears to be well built; good ring and tip, solid cable (a bit stiff) and gold plated connectors. However, the connectors have a "staggered ring" which makes them unsuitable for some headphones. I bought a Hesh 2 for the Skullcandy and they didn't match the earbuds. Nevertheless, they seem to be very well made and have good cable adhesion properties.
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