12 x 6L6GC Matched Power Valves – JJ Brand New Fully Tested

12 X JJ 6L6GC Matched Valves


Price Includes Free UK Delivery

500 in stock

All single valves, matched pairs and matched quads are fully tested in our warehouse before dispatch. These valves will guarantee awesome tone and amazing power. You WILL hear the difference. So get your amp sounding better than ever. Order your replacement valves today.


12 x 6L6GC Matched Dozen Valves JJ Brand For Guitar Amplifiers.

Looking to buy 12 x 6L6GC power valves? Great – you’ve come to the right place.

Our replacement 6L6GC power valves for guitar amplifiers will get your amp sounding better than ever. The valves start to wear the moment you start using your amp. So they gradually lose their tone and their power. Your amp no longer has the “sparkle” that it did when new.

These premium quality power valves are a significant upgrade in tone and power compared with many stock valves.  The best amplifier valves on the market today.

This awesome valve (tube) has established itself as one of the most reliable and best sounding power valves for guitar amplifiers on the market today. Guitarists absolutely love the sound it gives. Many will not even consider buying an amp that does not have these valves inside.

We always recommend JJ valves if you are looking for a matched dozen of 6L6GC valves. This is because they give superb tone and long life at a very attractive price. Both of these factors are important if you are going to change your valves.

Remember there are only five manufacturers of valves in the World. So all those re-badged and highly-priced “boutique” valves are in reality from the same factories.

So restore the power, clarity, and sparkle to your guitar amplifier with a brand new set of 12 x 6L6GC matched set of valves. Treat yourself to a brand new set of valves today.

  1. Awesome tone. This is what matters most to any serious guitarist.
  2. Sustained power to make the most of every stage in the amplifier chain.
  3. Long valve life.

This power valve has been in production for many years. So it has been tested and proven by thousands of guitarists around the world. We sell thousands of these valves every year. They are brand new and fully tested before they leave our warehouse.

Do you have any questions about replacing the 12 x 6L6GC matched valves on your amplifier?

If you have any questions about replacing your 6L6GC matched dozen of valves on your amplifier please drop us an email. We have over 30 years of experience so we are always happy to help.

Also, take a look at our FAQ Section first though in case we have already answered your question. You will find lots of useful hints and tips on upgrading your tubes.

Note: If you are ordering this set of power tubes for a Mesa Boogie amplifier, please let us know in the ‘notes’ field so that we can supply the exact match for the Mesa STR440 yellow tube.

Tubes for sale. The best replacement 6L6GC matched dozen on the market today.
  • Every valve kit is premium quality, carefully selected, fully tested and digitally matched.
  • We offer a range of fast delivery options with full tracking and insurance in place.
  • We ship daily all over the World. So you can buy with total confidence.

So, this 6L6GC matched dozen represents the very latest technology and will give you superior quality in tone and power.

Additional information

Weight1.23 kg
Dimensions26 × 21 × 17 cm


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12 X JJ 6L6GC Matched Valves

12 x 6L6GC Matched Power Valves – JJ Brand New Fully Tested