The Yaesu YH-77STA light weight stereo communications headphones have dual samarium-cobalt transducers with 103dB/mW sensitivity. They allow easy signal separation during dual receiver. They are designed primarily for use with the Yaesu FT-900, FT-990, FT-1000D, FT-1000MP and FT-1000MPV transceivers, but will also work with most newer communications receivers that support a stereo jack. Adjustable.
The YH-77STA is wired to a 3.5mm mini stereo plug. An adapter is included to convert this to a ¼ inch stereo plug.
Audio output Level : 103dB/mW
Impedance : 35 ohm
Cord length 1.8 m