Sennheiser MX 660

The Sennheiser MX 660 are earbud-style earphones and are a slight upgrade to Sennheiser's MX 560 earphones from their MX Series.  Like the MX 560, the earphones feature Sennheiser's Basswind system to deliver superior bass-driven stereo sound.

  They are designed with an asymmetrical cable and come with a pair of earpads to provide a high level of wearing comfort.  The earphones differ from the MX 560 since they include a volume control integrated into the cable which the MX 560 lacks.  The MX 660 utilize a dynamic driver system for 112dB sensitivity, 32-ohm impedance and a frequency range of 18-20,000 Hz that is wider than the MX 560.  They include a convenient carrying pouch and cable winder that makes it easy to adjust the cable length or store the earphones when not in use.  The earphones are available in both black and silver and come with a 2 year limited warranty.