Tung-Sol KT120

11 Reviews
Out of Stock
USD $‎105.95
New Sensor now announces the Tung-Sol KT120, which has a plate dissipation of 60 watts, making it the most powerful tube in the 6550/KT88/KT90 family. A pair of these tubes in push-pull configuration can deliver power levels of 150 or more watts. When used at the parameters found in existing 6550/KT88/KT90 circuits, the Tung-Sol KT120 is impervious to overload, delivering peak power with extreme reliability and long tube life. However, taking advantage of the higher current handling capacity of these tubes, a very unique and super powerful and stable amp can be designed using the Tung-Sol KT-120.

Note: The size of the Tungsol KT-120 tube is substantially more than its KT88 cousin. The seated height is approximately 4.5" (113mm). The width is 2" (52mm).

View Tungsol KT120 tube data sheet.

Other Tung-Sol tubesKT88 Tube Types

Additional Information and Downloads

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

Tung-Sol KT120 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

11 reviews

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Job Well Done


Just to let you know..a job well done and who ever added the few chunks of extra shipping "pop corn" on top of the tube to take up the gap, above and beyond!! Great sounding tube too Tung-Sol KT-120 .

Audio Enthuseist


An ENORMOUS improvement over the KT-88 tubes that I have been using in my Carver Tube 305 amplifiers. Imaging & Sound staging with these tubes went to another level. Thank You!!.

The best


Great product, service and advice. I appreciate your follow-up before completing order. Amazing one day delivery from Canada to New Jersey. My Cronus sings again.

Top to bottom sweet!


Running 8 of these in my Primaluna Dialogue Premium HP amplifier. Have tried EL34's, 6CA7's, KT88's, from various manufacturers-new production.The KT120's absolutely crushes them all. Bass, Midrange, Top End all blend together to make music sound accurate, powerful, musical, natural, the way it should. Not cheap, but if you have a quality system you will hear an upgrade and smile at what they provide. Using the Preferred Series 5AR4 rectifier tubes in my PL dialogue Premium preamp. What a match,great synergy. Highly recommended for those who listen & like to hear what the recording has too offer. Get 'em!

Keeps on ticking

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As an update to my original review, its now 2019 and my kt120 tubes are still making music in my PrimaLuna