The SS-100 was Sansui's TOTL headphone in the mid 1970s. It features a full aluminum housing and large orthodynamic drivers designed and built by Fostex. --Driver specifications-- Operating Principle: Planar-magnetic/Orthodynamic Size: 67mm Magnets: Anisotropic ferrite slotted discs Diaphragm material: 6 (?) micron polyester
High-end offering from German headhpone company 'Manta' (manufactured by Calrad Imports Inc.*) in 1974. *Reference Needed Impedance Rating in Ohms 4.0 minimum and 16.0 maximum Frequency Response Range Hz 30.0 to 15000.0 Headset Cord Length 84.0 inches nominal Earphone Element Type Dynamic Earphone Cushion Material ...