Electro-Harmonix 6550 EH Electron Tube / Matched pair

Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.

• Thanks to extra headroom, bass players can realize the full dynamic and tonal range of the instrument
• Nickel steel side rod mica supports sweet tone regardless of setup, even in combos where the tube is only inches from the speaker
• Also suitable for hifi use
• KT88 equivalent

Electro-Harmonix tubes are all new designs and are of excellent quality. Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.