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SKU: 555-0113-477 Categories: , ,


Power tubes. 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 Ampeg SVT and Marshall amps during the ’70s and early ’80s. A big, clean, tight tube with amazing headroom and performance and great power and dynamics. A similar tubes is the KT88 (used by Sunn and others). The highest-output power tube in this family.

Our highest-output 6550 is slightly easier to push into distortion than the original G.E. version and has a harder response than the “C” for tighter, quicker response. Good for bass amps and metal, when more pronounced note definition is desired with just a touch of distortion.

Matched pair of 6550 tubes in “medium” power range.


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