Superlux HD681 Dynamic Semi-Open Headphones PLUS BluCoil Audio Headphone Splitter 1 Male/2 Female 3.5mm Y-Cable Freq Range 10Hz-30KHz Max Power 300mW / Impedence 32 ohm x 2 Sensitivity 98dB SPL/mW blucoil Y-adapter allows you to split a signal or adapt from one connection to another Ultra-Clear-Quality Audio Transfer