Grado 15' 4 conductor headphone extension cable
Four conductor: 15 foot (450cm) extension cable terminated with a 1/4 inch (6.3mm) plug and a 1/4 inch (6.3mm) jack.
The cables are constructed from the same high quality wire as the headphone cables. For longer lengths cables may be piggybacked up to 3 cables. Grado guarantees no degradation of sonic quality with Grado headphones while using their extension cable.