Solid Bass Over-Ear Headphones with In-Line Mic and Controls Black. With newly designed drivers and in-line mic and control, the ATH-WS1100iS Solid Bass over-ear headphones give you portable, smartphone-compatible headphones with Hi-Res Audio reproduction and truly deep bass. The 53 mm Deep Motion Drivers, designed exclusively for the ATH-WS1100iS, feature an ultra-powerful magnetic circuit that works to deliver highly accurate audio with a wide frequency response, while the large diaphragm surface area of the drivers causes considerable air movement, helping to produce a rich, textured bass sound.