6550 / KT88 / KT90
KT88's generate a lot power, handling significantly more plate voltage than other power tubes. As a result, KT88's and 6550's are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications.
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$99.00
ANOS GE 6550. Only unmatched singles available.
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$299.95
ANOS Genelex GEC Gold Lion KT88 originals, not the reissue.
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$124.95
ANOS Tung-Sol 6550 originals, not the reissue.
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$99.95
Singles available.
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$41.95
Great tonal character for the price. In stock.
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Doug's Tubes Gift Card 2021
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$44.95
Detailed character, tightly compressed bottom end.
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$57.95
More refined, detailed. Good for hi-fi and guitar alike. ****OUT OF STOCK****
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$49.95
Ruby 6550A-STR is a Chinese Shuguang(Sino equivalent) - selected by RUBY.
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$59.95
Select 3-hole plate KT88 made by Shuguang in China. Also re-marketed as Valve Art.
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$44.95
Solid, reliable, lots of clean headroom.
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$49.95
Excellent tonal character. In stock.
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New old stock, pre winged =C= vintage 1990's until 2000. VERY RARE! Silver ~S~ logo.
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$99.95
Svetlana Winged "C" 6550. New old stock vintage 1998.
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$38.95
Extended highs, sharp bottoms. Wide bodied tone.
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$49.95
Tung-Sol KT-120.
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$39.95
Valve Art 6550