Electro-Harmonix 6550 Vacuum Tube
- Rugged beam tetrode power tube used in Ampeg SVT, Sunn, and hi-fi amplifiers.
- Uses a special high temperature leaded glass for reliability and superior vacuum integrity.
- Special high-temperature leaded glass for reliability and vacuum integrity.
- Tri-alloy plate material for maximum power and dissipation.
- Available in singles and matched tubes.