Koss The Plug Earbuds

The Plug ear bud is the first of its kind delivering accurate acoustical reproduction and unbelievable isolation typically found in more expensive, closed-style stereophones. The Plug features a dynamic element that is positioned just outside the ear and connected to a tubular port structure that is inserted on a soft expandable cushion into the ear canal. The soft foam cushion expands for a custom fit to improve isolation and enhance deep bass and treble clarity. The Plug features special ear cushions made of hydrophilic, formed urethane, for a custom fit each and every time it is inserted into the listener's ear. The custom fit enhances isolation when you want to plug out ambient sounds that interfere with the listening experience. Combined with your favorite music and a portable sound system, it is the ultimate accessory on the go.

Features:

• Dynamic element for extended frequency response
• Unique ear bud design directs sound into the ear canal for deep bass and extended frequency performance
• Specialty ear cushion material forms slowly in the ear canal to provide a custom fit and maximum isolation
• Includes replacement ear cushions
• Reliable L plug for improved reliability and durability

Specifications:

• Frequency Response: 10-20,000 Hz
• Impedance: 16 ohms
• Sensitivity: 112 dB SPL/1mW
• Distortion: < 0.3%
• Ear Cushions
• Cord: 4'