Ever Green just released a new headphone "DJ Headphone" that can connect to other headphones so that 2 people can enjoy listening to the same source (DX!) at the same time. It's only ¥1,999. You can connect the other headphone to "DJ Headphone" with its 3.5mm stereo mini jack on the left housing. It's an encapsulated type headphone, which has good noise barrier performance. The headphone housings can rotate 90 degrees allowing one ear monitoring. The accompanying elastic cable extends up to 3m. 50mm driver units produce clear bass sound. Audio frequency is from 20Hz to 20kHz, impedance 32?, and sensitivity 105±3dB. It weights about 230g without the cable.