Dual DK 220

Data

General

• Manufacturer: Dual
• Model: DK 220
• Type: Headphones
• Years of manufacture: 1977 - 1980
• Made in: Germany
• Weight: 240 g
• Original price approx.: 89 DM

Technical data

• Principle: Dynamic
• Coupling to the ear: Semi-open
• Nominal impedance: 140 Ohm
• Rated power: 2 Watt
• Contact pressure: approx. 3 N
• Frequency range: 16 - 20,000 Hz
• Distortion factor: < 1%
• Sound pressure level: 90 dB
• Plug: jack
• Cable length: 3 meters

Comments

• Other models of the same series:
• Dual DK 130
• Dual DK 220
• Dual DK 720

Pictures

• Extract from brochure: Dual DK-130, DK-220, DK-720