VINTAGE TECHNICS BY PANASONIC EAH-80A STEREO ELECTRET HEADPHONESVERY RARE SET COMPLETE IN THE BOXOVERALL MINT CONDITION MODEL: EAH-80AIMPEDANCE 4 TO 16 OHMSSENSITIVITY 101 dB(1V, 500 Hz_FREQUENCY RESPONSE 20 TO 20,000 HzMAX SPL. : 115 dB (500 Hz)TYPE: ELECTRET STATIC SPEAKERCAPACITANCE 160 PFDISTORTION : LESS 0.8%(500 Hz, 101dB) THIS IS A VINTAGE SET OF STEREO HEADPHONES WITH ELECTRET SPEAKERS. HAS AN INTERFACE DESIGNED TO BE WIRED TO THE SPEAKER OUTPUTS OF THE AMPLIFIER AND/OR BETWEEN THE SPEAKERS. TESTED AND WORK GREAT CLEAR CRISP SOUND AND SOFT COMFORTABLE HEADPHONES. SOLD AS IS.PLEASE SEE PHOTOS FOR DETAILS OF ITEM. FROM AN ESTATE.