Preferred Series 6L6GC

24 Reviews
Best Seller

Availability: Usually ships within 24 hours.

USD $‎39.95
This Preferred Series 6L6GC tube is a recent addition to our premium line of high quality tubes, where we find the best of current production and sourced to our specifications

This 6L6 tube is a new version of the popular TAD 6L6GC-STR you might already know. Once exclusive only to TAD (Tube Amp Doctor) we contracted the Shuguang factory in China to produce a massive lot of these tubes to our specs. We think this is a better tube and at a better price.

The Preferred Series 6L6GC construction features:
- A black plate like the premium NOS RCA 6L6GC tubes from the 1960's
- Double halo-style getters
- Gold grid wires
- The filament used is low-noise
- The bottle is made with a heavy gauge glass
- And finally the blue color base is a nice touch too!

This 6L6 tube is versatile and will sound great in many amplifiers, for many styles of music. Anything from blues to jazz to metal. It is well balanced from top to bottom. The highs are smooth, clear and clean. The low end well detailed and articulate even when pushed hard.  We think this is the best alternative to the famous Philips/Sylvania STR-387 6L6GC.

From our review: "This tube has a sound that I would characterize as smooth and warm. The high end is articulate but not sharp or brittle. Bass response is bigger than most but not boomy, so you still get good note definition. The midrange is very nice and thick without any tendency to sound nasal."

The Preferred Series 6L6GC tubes carry a 6 month extended warranty.

6L6 Tube Types       Other Preferred Series tubes

Additional Information and Downloads

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

Warranty Information and Return Policy

Warranty Period: 6 months

All our Preferred Series tubes are guaranteed for 6 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 6 months 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 6 months, or are returned improperly.

These guidelines may be updated without notice.

Ratings & Reviews

24 reviews

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Clear balanced cleans, nice with overdrive pedal.

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Fender Hot Rod Deluxe owners... try these tubes. Bias around 68 mA. Great tone!

Excellent tubes - Better than Svetlana Winged C?

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I just picked up a Bruno Cow Tipper 45 (killer amp) and had a corresponding tube GAS attack that fortunately included buying a set of these tubes based on the reviews.
The amp came with a set of barely used Svetlana Winged Cs and I picked up a set of A-NOS GE 6L6GCs as well. The GEs were the winner for clarity and definition but the Preferred had more clarity than the Winged Cs and less of that thick heaviness the Winged Cs have. This was a welcome surprise and I'd be more than happy to use the Preferred for live and recording. GEs are getting pricey and as snobby as I am, the Preferred win out for the value.

These Preferred 6L6's with RCA clear tops make me want to listen, and listen, and listen

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First off- excellent service from the tube store. Shipped from Canada to Illinois in a just a couple days. Excellent, professional communication.

This Tube- In my Elekit TU-8200 along with RCA clear tops into Infinity Infinitesimal 0.3 speakers is my favorite combo. Makes for a very lively and engaging sound. Much clearer than with the stock ElectroHarmonix 6L6.

The sound in my setup was uninspiring with the stock China 12AU7 and Gold Lions.

They have a nice blueish glow which I've read is an indication of high quality.

These 6L6's with the RCA's bring songs to life. Classic Rock, fold, indie, EDM, alternative, soul - doesn't matter. They have the right kind of voodoo

Great sound, questionable reliability.

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Bought a quad of these because they where special priced at that time. Stored them for a while and eventually used them on a Fender Twin Reverb. They sound amazing. I just love the sound; very clear, defined, balanced. However found out that they can’t be biases even to 60% without getting red plates and arch between plates. Had to bias the amp about 50%. I have sets of preferred series of el34’s, kt88’s and these 6l6gc. All sound incredible but this 6l6’s don’t stand to the specs powerwise. This been said, again , I love the sound.