KT66 Tube Types

KT66 Tube Types

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How do these tubes sound? Read reviews to learn more.

Facts you should know before purchasing:
The KT66 tube type is a 25 Watt tube rated for plate voltage up to 500 volts.

Check your amplifier's owner's manual to find out what your amp requires or ask us.
We have 5  KT66 Tube Types in stock right now.
 Lowest Price to HighestA to Z
Top pick49.95Shuguang KT66Genalex - Gold Lion KT66
Top pick69.95Genalex - Gold Lion KT66JJ KT66
69.95Tung-Sol KT66Shuguang KT66
74.95JJ KT66Shuguang Treasure KT66-Z
219.95Shuguang Treasure KT66-ZTung-Sol KT66

Genalex - Gold Lion KT66Genalex - Gold Lion KT66The Gold Lion KT66 tube is a reissue tube that is made in Russia. From the manufacturer, "Exact copy of the original clear glass KT66. The tube that created “The Bluesbreaker Tone”. Used in 50’s-60’s hi-fi favorites such as the Heathkit W-5M and many Leak amplifiers."


Availability: Usually ships within 24 hours.
GL-KT66Regular price: $79.95Sale price: $69.95Price is for a matched pair. 
JJ KT66JJ KT66The new JJ KT66 tube from JJ Electronic. This KT66 tube is rated to handle 550V of plate voltage and screen voltage.


Availability: Usually ships within 24 hours.
TE-KT66$74.95Price is for a matched pair. 
Saratov KT66Saratov KT66The Saratov KT66 is a high quality Russian made tube. This tube is well balanced from top to bottom, and has a smooth overdrive that makes it a great choice for a classic tone. It is acceptable to use in many 6L6 tube amps, but not all.


Availability: Out of stock.
RU-KT66$59.95Price is for a matched pair. 
Shuguang KT66Shuguang KT66This new Chinese KT66 tube is very similar to the one used in the Marshall reissue JTM 45. These tubes need to be biased hot to sound their best. You can learn more about them in our KT66 tube review.


Availability: Usually ships within 24 hours.
SH-KT66$49.95Price is for a matched pair. 
Shuguang Treasure KT66-ZShuguang Treasure KT66-ZAre you looking for a premium KT66 tube for your vintage Quad II mono blocks? Consider the new Shuguang Treasure series KT66-Z tube. This KT66 tube sounds fantastic and looks great too.


Availability: Usually ships within 24 hours.
SH-KT66-Z$219.95Price is for a matched pair. 
Sovtek KT66Sovtek KT66From our review of this tube: "Everything you read in the review of the Sovtek 6L6WXT+ tube holds true for this tube..." more


Availability: Discontinued by manufacturer.
SO-KT66$55.95Price is for a matched pair. 
Tung-Sol KT66Tung-Sol KT66From our review of the Tungsol KT66 tube: "Big and open with very solid lows and smooth treble response. The mids are well balanced and don’t go to the extremes of sounding scooped or nasal."


Availability: Usually ships within 24 hours.
TS-KT66$69.95Price is for a Matched Pair. 




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