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Pictured: Single
Pictured: Apex Matched Pair
Pictured: Apex Matched Quad
Pictured: Apex Matched Sextet
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Vacuum Tube - 6L6GC, JJ Electronics
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.
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Single | T-6L6GC-JJ | 609722122788 | 6L6GC |
| Apex Matched Pair | T-6L6GC-JJ-MP | 609722122795 | |
| Apex Matched Quad | T-6L6GC-JJ-MQ | 609722122801 | 6L6GC |
| Apex Burned-In Matched Pair | T-6L6GC-JJ-MPB | 609722122818 | |
| Apex Matched Sextet | T-6L6GC-JJ-MS | 609722157476 | |
| Apex Burned-In Matched Quad | T-6L6GC-JJ-MQB | 609722122825 | |
| Apex Burned-In Matched Sextet | T-6L6GC-JJ-MSB |
| Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 Dimensions | Apex Burned-In Matched Pair version | T-6L6GC-JJ-MPB | 4.6 in. × 3.3 in. × 1.6 in. |
| Apex Burned-In Matched Quad version | T-6L6GC-JJ-MQB | 4.6 in. × 3.3 in. × 3.3 in. | |
| Apex Burned-In Matched Sextet version | T-6L6GC-JJ-MSB | 4.6 in. × 3.3 in. × 1.6 in. | |
| Apex Matched Pair version | T-6L6GC-JJ-MP | 1.8 in. × 3.3 in. × 4.6 in. | |
| Apex Matched Quad version | T-6L6GC-JJ-MQ | 3.3 in. × 3.3 in. × 4.6 in. | |
| Apex Matched Sextet version | T-6L6GC-JJ-MS | 3.25 in. × 4.25 in. × 4.75 in. | |
| Single version | T-6L6GC-JJ | 1.6 in. × 1.6 in. × 4.6 in. | |
| Weight (Packaging) | Apex Burned-In Matched Pair version | T-6L6GC-JJ-MPB | 0.29 lbs. |
| Apex Burned-In Matched Quad version | T-6L6GC-JJ-MQB | 0.58 lbs. | |
| Apex Burned-In Matched Sextet version | T-6L6GC-JJ-MSB | 0.87 lbs. | |
| Apex Matched Pair version | T-6L6GC-JJ-MP | 0.29 lbs. | |
| Apex Matched Quad version | T-6L6GC-JJ-MQ | 0.58 lbs. | |
| Apex Matched Sextet version | T-6L6GC-JJ-MS | 0.87 lbs. | |
| Single version | T-6L6GC-JJ | 0.145 lbs. |
| T-6L6GC-JJ-MP - Apex Matched Pair version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ-MQ - Apex Matched Quad version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ-MS - Apex Matched Sextet version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ-MPB - Apex Burned-In Matched Pair version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ-MQB - Apex Burned-In Matched Quad version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ-MSB - Apex Burned-In Matched Sextet version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 | |
| T-6L6GC-JJ - Single version | Body Height | 100 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 Diameter | 38 mm | |
| Item Height | 115 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 |
 Specification Sheet | All Models |
My Project Lists
Specifications, Files, and Documents
Questions and Answers
Click each question to see its answers.
3 answers
Will I have to rebias my Mesa Boogie Dual Rectifier 100 watt amp head, and how well do these work in this amp head.
Asked by Anonymous on November 11th, 2016.
According to Mesa Boogie, if you order these tubes with "middle values" you should not have to rebias your amp.
Will I have to rebias my EVH 5150 III Amp if I put these in.
If your EVH has a bias pot we recommend re-biasing your amp.
3 answers
You can request plate current (PC) ratings at low, medium, or high where high equates to high headroom. Simply put a note on your order or give us a call and we will accommodate your request.
Asked by Anonymous on May 28th, 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.
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
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: info@amplifiedparts.com for more information.
1 answers
Can I use these in a Fender 75?
Asked by Anonymous on June 26th, 2016.
It appears that the Fender 75 uses 6L6's.
1 answers
Hi, I had 1 jj 6l6 bust when i shipped my amp . so I took another tube out to make it even 1 on each side . can i buy just one? without a bias?
Asked by Anonymous on 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.
1 answers
If I need two tubes, do I need to purchase two single ones or Apex Matched Pair? Because prices vary.
Asked by Anonymous on January 19th, 2017.
If you require two power tubes in a push pull configuration then you would want to purchase a matched pair.
1 answers
Do you have tube complement for fender twin reverb ?
Asked by Anonymous on 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
1 answers
Will I have to rebias a 2002 59' Fender Bassman Reissue if I install a pair of these 6L6s?
Asked by Anonymous on 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.
1 answers
Can I select a hard or late distortion rating on the jj 6l6gc tubes?
Asked by Anonymous on November 28th, 2017.
Yes you will want to request "high numbers" in the notes section of the checkout process.
1 answers
Can i use this tube in an old 1948 Rock-Ola Jukebox amplifier? The tubes im looking for are 6L6G E7M.
Asked by Anonymous on February 4th, 2019.
February 4th, 2019
Staff Member
This will safely work in place of any 6L6G tube.
1 answers
Will this work in a crate v50
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.
1 answers
I've got a Krank Rev Jr20, came with 5881 from the Krank Factory, when I bought it secondhand it had a busted GT-6V6-R tube, looking to replace them, would the JJ-6L6GC work? If not what tube would yall recommend? This amp is "cathode bias/non adjustable"
Thank You,
Tony
Asked by Anonymous on January 2nd, 2021.
January 6th, 2021
Staff Member
6L6 tubes are interchangeable with 5881s, but a 6V6 is not compatible with the two.
1 answers
Can I use these to replace the EL34's in my Blackstar HT Club 40 Mk II? Just re-bias?
Asked by Anonymous on September 3rd, 2021.
September 7th, 2021
Staff Member
We can't find any information that indicated the amp in question can use both EL34s and 6L6s. We recommend staying with EL34s or considering 6CA7s.
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
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Product Reviews
Nice tubes. Full in the midrange with a smooth, detailed high end response. Durability TBD.
Best tubes. I re-tubed my EVH 5150 and I love how it sounds, more focused, tight, and alive.
Amp had an intermittent solder joint at one of the 6L6GC screen resistors that eventually blew out one of the original Ruby output tubes. After finding and correcting the problem a matched pair of JJ 6L6GC tubes from Amplified Parts brought the amp back to life and is now better than new, sounding great with full bottom and top end. Thing here is that the tubes I received were matched perfectly when measured on a transconductance tube tester and when biased were within less than a milliamp of each other. Signal testing with an oscilloscope showed a very symmetrical both clean and overdriven output waveform, confirming the well matched tubes. This was my first purchase from Amplified Parts and will absolutely purchase again from Amplified Parts when tube matching is needed for any of my amps since the quality and cost amounted to a very good value. BTW this is an honest voluntary review and I have no affiliation with Amplified Parts. Again, very happy with purchase.
Solid tubes with crisp and clear performance for a reasonable price.
I have always loved the JJ tubes in just about any tube guitar amp I’ve either fixed up or just needed a new set of tubes. They are workhorses! They can withstand the higher currents of some amplifiers. I’ve had the same set of 6L6 tubes for instance in my old trusty 1996 fender deville 4x10 for about 5 years now and still sounds great! This latest set went in to a 1981 Peavey Classic 65 watt. It sounds fantastic! A real sleeper.
Very neutral sounding power tube. Really lets you hear the guitar not the amp.
Customer service was outstanding. Shipped in a timely manner. Great pricing...
I have had good luck with JJ Power Tubes . I play through Boogie Mark III's . I recently acquired a second Mark III and it came with all 4 6L6 Apex Matched tubes. this one is a green stripe. The sound is awesome . Creamy distortion and loved the way those tubes sounded. So i bought an Apex Matched Quad of 6L6's to replace the El34 and 6L6 tubes in my blue stripe and they also sound Great! So I am a believer in the JJ tubes and Apex Matching. I thank Apex for taking the time to explain in detail via video how Apex goes about matching tubes and the brains behind it all!
Thanks Again!
Mike C
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.
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!