Shuguang KT66

2 Reviews
Best Seller

Availability: Usually ships within 24 hours.

USD $‎31.95
The 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.
It is acceptable to use in many 6L6 tube amps, but not all.

Other Shuguang tubesKT66 Tube Types

Additional Information and Downloads

KT66 Tube Review

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

Genalex - Gold Lion KT66 Datasheet (PDF)

Download Adobe Acrobat PDF reader

Warranty Information and Return Policy

Warranty Period: 3 months

All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)

If you receive a tube that does not perform to the manufacturer's specifications, please do the following:

- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.

We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.

These guidelines may be updated without notice.

Ratings & Reviews

2 reviews

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Love 'em!


I had my tech change my Superlead from EL34's to KT66's and I bought a quad of these. My amp sounds wayyyyy better now and I don't know any reason to go back, unless these fail spectacularly!BUY THEM!!!

Marshall Bluesbreaker RI use.


Just retubed my mid-90's Marshall Bluesbreaker with the standard Shuguang KT-66's for the second time. They do fit (just) in the old, shallower cabinet. They sound great too - and I've had a set of genuine British Genalex KT-66's in the amp once.