Vacuum Tube - 6L6GC, JJ Electronics

JJ Electronics
Pictured: Single
Pictured: Single
Pictured: Single
Pictured: Single
Pictured: Apex Matched Pair
Pictured: Apex Matched Pair
Pictured: Apex Matched Quad
Pictured: Apex Matched Quad
Pictured: Apex Matched Sextet
Pictured: Apex Matched Sextet
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Vacuum Tube - 6L6GC, JJ Electronics

Starting at: $17.50
In stock

The JJ Electronic 6L6GC is the classic pentode built with the rugged construction that only JJ could deliver. At 30W, this tube delivers plenty of headroom. The highs are clear and responsive with warm mids and tight solid lows. Known for their reliability and articulation, the JJ 6L6GC is a great option for guitar amplifiers and Hi-Fi stereo equipment.

Apex Tube Matching
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
Item ID:
JJ Electronics, Apex Matched
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-6L6GC-JJ-MP609722122795
Apex Matched QuadT-6L6GC-JJ-MQ609722122801
Apex Burned-In Matched PairT-6L6GC-JJ-MPB609722122818
Apex Matched SextetT-6L6GC-JJ-MS609722157476
Apex Burned-In Matched QuadT-6L6GC-JJ-MQB609722122825
Apex Burned-In Matched SextetT-6L6GC-JJ-MSB
Product Measurements
Body Height100 mm
Filament Current (If)0.9 A
Filament Voltage (Uf)6.3 V
Grid Current 2, single tube (Ig2)5 mA
Grid Voltage 1, push-pull (Ug1)-17.5 V typical
Grid Voltage 1, single tube (Ug1)-14 V typical
Grid Voltage 2, push-pull (Ug2)≤ 450 V, 270 V typical
Grid Voltage 2, single tube (Ug2)≤ 450 V, 250 V typical
Grid capacitance (cg1)12.5 pF
Grid current 2, push-pull (Ig2)11 mA
Grid to Plate Capacitance (ca/g)1.5 pF
Item Diameter38 mm
Item Height115 mm
Plate Capacitance (ca)10 pF
Plate Current, push-pull (Ia)134 mA
Plate Current, single tube (Ia)72 mA
Plate Dissipation (Wa)≤ 30 W
Plate Voltage, push-pull (Ua)≤ 450 V, 270 V typical
Plate Voltage, single tube (Ua)≤ 450 V, 250 V typical
Packaging Information
Packaging DimensionsApex Burned-In Matched Pair version4.6 in. × 3.3 in. × 1.6 in.
Apex Burned-In Matched Quad version4.6 in. × 3.3 in. × 3.3 in.
Apex Burned-In Matched Sextet version4.6 in. × 3.3 in. × 1.6 in.
Apex Matched Pair version1.8 in. × 3.3 in. × 4.6 in.
Apex Matched Quad version3.3 in. × 3.3 in. × 4.6 in.
Apex Matched Sextet version3.25 in. × 4.25 in. × 4.75 in.
Single version1.6 in. × 1.6 in. × 4.6 in.
Weight (Packaging)Apex Burned-In Matched Pair version0.29 lbs.
Apex Burned-In Matched Quad version0.58 lbs.
Apex Burned-In Matched Sextet version0.87 lbs.
Apex Matched Pair version0.29 lbs.
Apex Matched Quad version0.58 lbs.
Apex Matched Sextet version0.87 lbs.
Single version0.145 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet600.67 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on November 11th, 2016.
Matt H
November 11th, 2016
According to Mesa Boogie, if you order these tubes with "middle values" you should not have to rebias your amp.
November 13th, 2016
Will I have to rebias my EVH 5150 III Amp if I put these in.
Matt H
November 16th, 2016
If your EVH has a bias pot we recommend re-biasing your amp.
Asked by Anonymous on May 28th, 2017.
Matt H
May 31st, 2017
You can request plate current (PC) ratings of low, medium, or high where high equates to high headroom. Simply put a note on your order or give us a call and we can accommodate your request.
November 17th, 2017
Hello Good People, This is Dave. I have four JJ 6L6GC's with a sku #T-6L6GC-JJ-MQ They were given as a gift bought thru amazon, And am happy with them! My question is, on all four tube boxes a label was marked 17/2.5 Could you tell me what this means? The values? Thank you in advance,I would really appreciate it! I will look to "Amplifiedparts" for future tube/electronics needs. Best Regards, Dave
Matt H
November 22nd, 2017
The number will mean different things depending on how it is written. You will either see a printed Apex sticker or a sticker with a handwritten number. Please contact us at: for more information.
Asked by Anonymous on June 26th, 2016.
Matt H
June 27th, 2016
It appears that the Fender 75 uses 6L6's.
Asked by Anonymous on January 19th, 2017.
Matt H
January 19th, 2017
Power tubes need to be matched in order for your amp to operate properly. If you ordered your tubes from us, we can get you one tube to match your existing power tubes.
Asked by Anonymous on January 19th, 2017.
Matt H
January 19th, 2017
If you require two power tubes in a push pull configuration then you would want to purchase a matched pair.
Asked by Anonymous on January 19th, 2017.
Matt H
January 19th, 2017
Yes, we do have a complement for the Twin Reverb and you can find it by searching this part number on our site. SET-FENDER-123
Asked by Anonymous on August 10th, 2017.
Matt H
August 10th, 2017
With any retube, you may need to make adjustments to your amp depending on the type of bias it has. Your amp will either be fixed adjustable bias (has bias pot on the back of the amp) , Fixed non-adjustable bias (bias is fixed by a resistor in your amp), or cathode bias (self biasing no bias required). The manual for your amp should be able to tell you what type of bias you have. Rebiasing an amp is something that should be done by an experienced tech. Many amp manufactures setup their amps to accept "middle values" for tubes. You can request middle numbers when ordering. Keep in mind, this will not guarantee you will not have to rebias your amp.
Asked by Anonymous on November 28th, 2017.
Matt H
November 28th, 2017
Yes you will want to request "high numbers" in the notes section of the checkout process.
Asked by Anonymous on February 4th, 2019.
February 4th, 2019
Staff Member
This will safely work in place of any 6L6G tube.
Asked by Anonymous on March 1st, 2020.
March 3rd, 2020
Staff Member
According to our research, the Crate V50 does use 6L6 power tubes, so yes, these are compatible with that amp.

Product Reviews

4.92 out of 5 based on 12 reviews
- September 19th, 2019
5 out of 5

I bought these as replacements for a Fender Hot Rod DeVille 2x12, and they’re fantastic! They highlight a broad range of sound and seem to enhance the low end compared to the original tubes I had.

- August 1st, 2019
5 out of 5

I bought a Fender Hot Rod Deluxe used and decided to swap out all the stock tubes for JJs. To my ears the JJs are a bit warmer than the stock Fender tubes which come in the amp. Also, Amplified Parts have the best prices I found online for tubes. Shipping was fast and the tubes arrived securely packaged. Thanks, Amplified Parts!

- March 14th, 2019
5 out of 5

I have tried GT, EHX, RUBY and many other tubes, and the JJ's sound amazing, and for the price, it's the best option, I mean for me, for my ear, this sound amazing!!! Greetings from México! AMPLIFIEDPARTS YOU KICK ASS!!! THANKS!

- March 2nd, 2019
5 out of 5

It is a reliable, stable power vacuum tube.
I am experimenting with various power vacuum tubes,
Slovakia made is stable.
We recommend all means.

- January 16th, 2019
5 out of 5

Amplified parts is the place to go when you need replacement tubes! Great prices.

- September 8th, 2018
5 out of 5

This matched pair solved all the issues I was having and improved the tone for the better.
Much better!

- August 23rd, 2018
4 out of 5

Great sounding tubes and well-matched. However, the gain is on the low end so I had to increase my bias adjustment to maximum in order to get close to the recommended 70% of maximum power output from the power tubes.

- August 17th, 2017
5 out of 5

I installed a matched pair of JJ 6L6 GCs in my 1963 Lafayette guitar amp. They produce great sound on both highs and lows.

- February 4th, 2013
5 out of 5

Put a pair of these in a hot rod deluxe III. Very open sounding with controlled bass, mids are super and nice high end without super piercing highs. Really gave this amp some balls.

- October 7th, 2011
5 out of 5

From my experience with the JJ 6L6GC,the short review at the top of this tubes' page is spot on.If you like dirt (and who dosent) This might be the best new tube you can get for it.

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