The Original American Stereophone CompanyEver since we invented the world's first SP/3 stereophone back in 1958, Koss Stereophones have been bringing back the excitement of a live performance.
Music lovers around the world recognize that dedication to accuracy in sound reproduction as The Sound of Koss.
DescriptionThe Koss® Stereo Headphone "PORTA PRO" is an over-ear headphone to plug in a hi-fi system, a keyboard or - via provided adapter - an MP3 player.
Dynamic elements of this 80 g weighing headset makes for a special low bass performance.
 The Ultimate Portable HeadphoneComfort and convenience combined.
KEY FEATURES:The ultra portable on-ear headphonesComfort Zone setting on temporal pad for comfortable secure fitThe ultimate active headphones with a collapsible headband design for protective storageDynamic element for extended frequency responseOxygen-free copper voice coils deliver deep bass and signal clarityIncludes a convenient carrying case for protective storageCovered under the Koss Stereophones Limited Lifetime Warranty