Koss SPARKPLUG-XT

Features a dynamic element 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. Now with improved slow memory ear cushion made of hydrophillic-formed urethane, you are guaranteed a custom fit every time.

The SparkPlug's fit enhances isolation when you want to tune out ambient sounds that interfere with the listening experience.

Covered under Koss' No-Questions-Asked Lifetime Warranty.

Specifications:

• Frequency Response: 10-20,000 Hz
• Impedance: 16 ohms
• Sensitivity: 112dB SPL/1mW
• Distortion: <0.3%
• Cord: Straight, Dual Entry, 4 ft.