Electro-Harmonix 6550EH Matched Pair | Octal Power Tube with FREE 24-Hour Burn-In and Matching!

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.

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

Product details

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.

The perfect match for the Tung-Sol original. The 6550EH offers excellent linearity, power handling capacity and heat dissipation. Four-pillar construction and mica spacers help maintain a rugged mechanical reliability. Classic tone is sustained at a prolonged, high output. A new leaded glass compound is utilized to maintain vacuum integrity, balanced performance and ensure long life. Great tube for SVT and SUNN amps as well as all Hi-Fi amps.