With a headphone adapter plug, you can connect the cable from your headphones to any device. This way, you can connect headphones to a receiver or other device that doesn't have a 3.5mm connection. On this page, you'll find adapter plugs that convert the 3.5mm connector to an RCA connector, but also 3.5mm to 6.3mm adapters. Check the product page to see whether the adapter or adapter plug has the correct connectors.