The Numark HF125 headphones come fitted with a 1/4" (6.35m) jack socket, allowing them to be used with keyboards, DJ equipment, digital drum kits and much more! The headphones are fitted with a 1.8 metre cable, a longer lead than you might expect to find. The extra cord length is a real advantage, not least when 2 people are listening to the same sound source by using a headphone splitter.The headphones are sturdy and reliable, making them a great value purchase for use education use. The sound quality is good too, so they are just as good a bargain purchase for use with any amplified instruments, or for private listening on computers.