GT-6550-C Quartets (Rated 1-10)

Fender Direct Price $239.99
(MSRP $279.99)


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$239.99

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 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.

Our softest 6550 is easier to push into distortion than the “R” version or the original. Has a nice character  that breaks up slightly earlier. A 6550 standard, this tube will produce a stock signature distortion at lower levels than the “R” version.

Matched quartet of GT-6550-C tubes rated from power range 1-10.  Each quartet has a specific rating (i.e. R2, R7, etc.). Tubes are 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. 

Please review item descriptions to ensure proper ordering.

Click here to view the 1-year Parts and Accessories Warranty

Series: Other Power Tubes
#5550113473

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on April 23, 2014

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