During the coof period I rebuild my HP1's. They were a bit tattered, headband was crumbling and lots of other small niggly things bothered me. See this entry at the IEEE Hall of Fame: Yamaha HP1 hall of fame IEEE
Between friends.
Groetnis
- Type: orthodynamic headphone
- Drive units: 55mm
- Impedance: 150Ω
- Frequency Response: 20Hz to 20kHz
- Input: 3000mW (nominal), 10000mW (max)
- Maximum SPL:
- Distortion: 0.3%
- Cord length:
- Weight: 290g
- Price: $200
- Year: 1976


Between friends.

Groetnis