$399.99
One of the highest-output 8-pin pentodes available. Originally manufactured in the United States by G.E.®, it delivers 35 to 50 watts per tube and was original equipment in amps during...

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Sku/Model: 5550113620

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One of the highest-output 8-pin pentodes available. Originally manufactured in the United States by G.E.®, it delivers 35 to 50 watts per tube and was original equipment in amps during the ’70s and early ’80s. A big, clean, tight tube with amazing headroom and performance and great power and dynamics. A similar tube is the KT88 (used by Sunn® and others). The highest-output power tube in this family.

EXCLUSIVE GT design. This is the highest-output power tube in the 6550/KT88 family, with special heat dissipation wings on the plate that let it reach the same power specs as the original Gold Lion KT88 of the ’60s. The best, most durable and most powerful tone in the family, with outstanding dynamic response and big bottom end. The definitive tube for bass amps, country, jazz, metal and any situation in which most of the tone shaping occurs in the preamp, pedals or effects. Amazing high-horsepower delivery of clean tone.

Matched quartet of KT88-SV tubes rated from power range 1-10. Each quartet has a specific rating (i.e. R2, R7, etc.) and is matched and biased to a specific output level.

  • R1-R3 = Low: Early distortion, wide range, softer attack good for Rock and Blues solos.
  • R4-R7 = Medium: Normal performance, great dynamic range/attack and best all around rating type for all styles of playing
  • R8-R10 = High: Most dynamic range, most clean power/less break-up for power players, Jazz and bass amps.
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