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
Spark High Definition In-ear Headphones are the combination of precision acoustics, unique design and expert ergonomic research. Powerful and accurate acoustics are achieved through high performance dynamic driver and special high definition acoustic filter built-in, resulting in full, explosive bass, intense mid-range and clear treble frequency response that will put a smile on your face...