6L6 - 5881 -KT66 - 7027
Shop our large selection of 6L6 & equivalent vacuum tubes. This is one of the most popular power tubes on the planet and as such, there are almost unlimited options.
There is much confusion surrounding the equivalent and substitute tubes in regards to 6L6. Much of it has to do with the fact that the tube has been around for so long, it has been revised and new versions have been made. Please be sure that you are ordering the correct tube. A 6L6G will not work in place of it's high-power successor, the 6L6GC.
When in doubt, you can always use a 6l6GC if an amplifier calls for any of the 6L6 types because the GC can handle the highest voltage.
Metal 6L6, 6L6G & 6L6GA - Maximum dissipation of 19 watts and are interchangeable
6L6GB, 6L6WGB, 5881 - Maximum dissipation of 23/26 watts and are interchangeable
6L6GC - The standard among 6L6's. Maximum dissipation of 30 watts, generally interchangeable with KT66
KT66 - Maximum plate dissipation of 33 watts and is generally interchangeable with 6L6GC
7027A - a 6L6GC with a different pinout and is not interchangeable with anything
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New Svetlana SV-6L6GC Reissue Vacuum Tube
Svetlana
$43.21New Plate Current Tested Svetlana SV-6L6GC Vacuum Tube Svetlana's design is based upon the vintage Sylvania 6L6GC/STR387 tubes. Ruggedized with thickened mica spacers and a gold plated grid, this is a great tube for use in a high powered amplifier. ...NP148-1$43.21 -
New Matched Quad (4) Tung-Sol 7027A Vacuum Tubes
Tung-Sol
$217.38New Plate Current Matched Quad of Tung-Sol Reissue 7027A Vacuum Tubes The 7027A boasts a vigorous and sturdy output and is a fantastic complement to most vintage Ampeg amps. Will work in place of: 7027, 7027A Testing and/or Matching At...NP143-4$217.38 -
New Matched Pair (2) Tung-Sol 7027A Vacuum Tubes
Tung-Sol
$109.98New Plate Current Matched Pair of Tung-Sol Reissue 7027A Vacuum Tubes The 7027A boasts a vigorous and sturdy output and is a fantastic complement to most vintage Ampeg amps. Will work in place of: 7027, 7027A Testing and/or Matching At...NP143-2$109.98 -
New Tung-Sol 7027A Vacuum Tube
Tung-Sol
$52.59New Plate Current Tested Tung-Sol Reissue 7027A Vacuum Tube The 7027A boasts a vigorous and sturdy output and is a fantastic complement to most vintage Ampeg amps. Will work in place of: 7027, 7027A Testing and/or Matching At VIVA TUBES,...NP143-1$52.59 -
New Matched Octet (8) Tung-Sol 6L6G Fat Bottle Vacuum Tubes
Tung-Sol
$650.28New Plate Current Matched Octet of Tung-Sol Reissue 6L6G Fat Bottle Vacuum Tubes The Tung-Sol 6L6G features the same internal construction as the 6L6G straight bottle, but is put into the traditional larger shouldered glass. Will work in place...NP141-8$650.28 -
New Matched Quad (4) Tung-Sol 6L6G Fat Bottle Vacuum Tubes
Tung-Sol
$327.68New Plate Current Matched Quad of Tung-Sol Reissue 6L6G Fat Bottle Vacuum Tubes The Tung-Sol 6L6G features the same internal construction as the 6L6G straight bottle, but is put into the traditional larger shouldered glass. Will work in place...NP141-4$327.68 -
New Matched Pair (2) Tung-Sol 6L6G Fat Bottle Vacuum Tubes
Tung-Sol
$164.10New Plate Current Matched Pair of Tung-Sol Reissue 6L6G Fat Bottle Vacuum Tubes The Tung-Sol 6L6G features the same internal construction as the 6L6G straight bottle, but is put into the traditional larger shouldered glass. Will work in place...NP141-2$164.10 -
New Tung-Sol 6L6G Fat Bottle Vacuum Tube
Tung-Sol
$78.08New Plate Current Tested Tung-Sol Reissue 6L6G Fat Bottle Vacuum Tube The Tung-Sol 6L6G features the same internal construction as the 6L6G straight bottle, but is put into the traditional larger shouldered glass. Will work in place...NP141-1$78.08 -
New Matched Octet (8) Mullard 6L6GC Reissue Vacuum Tubes
Mullard
$416.50New Plate Current Matched Octet of Mullard 6L6GC Reissue Vacuum Tubes This valve is a rugged and reliable replacement for any 6L6 or 5881 type. Perfect replacement for the output valves used in the reissue Marshall JTM-45 head and Bluesbreaker Combo...NP091-8$416.50 -
New Matched Sextet (6) Mullard 6L6GC Reissue Vacuum Tubes
Mullard
$314.37New Plate Current Matched Sextet of Mullard 6L6GC Reissue Vacuum Tubes This valve is a rugged and reliable replacement for any 6L6 or 5881 type. Perfect replacement for the output valves used in the reissue Marshall JTM-45 head and Bluesbreaker Combo...NP091-6$314.37 -
New Matched Quad (4) Mullard 6L6GC Reissue Vacuum Tubes
Mullard
$208.51New Plate Current Matched Quad of Mullard 6L6GC Reissue Vacuum Tubes This valve is a rugged and reliable replacement for any 6L6 or 5881 type. Perfect replacement for the output valves used in the reissue Marshall JTM-45 head and Bluesbreaker Combo...NP091-4$208.51 -
New Matched Pair (2) Mullard 6L6GC Reissue Vacuum Tubes
Mullard
$105.54New Plate Current Matched Pair of Mullard 6L6GC Reissue Vacuum Tubes This valve is a rugged and reliable replacement for any 6L6 or 5881 type. Perfect replacement for the output valves used in the reissue Marshall JTM-45 head and Bluesbreaker Combo...NP091-2$105.54 -
New Mullard 6L6GC Reissue Vacuum Tube
Mullard
$50.50New Plate Current Tested Mullard 6L6GC Vacuum Tube This valve is a rugged and reliable replacement for any 6L6 or 5881 type. Perfect replacement for the output valves used in the reissue Marshall JTM-45 head and Bluesbreaker Combo amplifiers. Will work...NP091-1$50.50 -
New Matched Quad (4) Tung-Sol 7581A Vacuum Tubes
Tung-Sol
$181.04New Plate Current Matched Quad of Tung-Sol 7581A (KT66) Vacuum Tubes The Tung-Sol 7581A is rated at a higher 35 watts compared to the standard 7581 or 6L6GC. This tube is a direct substitute for the KT66, and is in fact a version of the KT66. These...NP085-4$181.04 -
New Matched Pair (2) Tung-Sol 7581A Vacuum Tubes
Tung-Sol
$92.23New Plate Current Matched Pair of Tung-Sol 7581A (KT66) Vacuum Tubes The Tung-Sol 7581A is rated at a higher 35 watts compared to the standard 7581 or 6L6GC. This tube is a direct substitute for the KT66, and is in fact a version of the KT66. These...NP085-2$92.23 -
New Tung-Sol 7581A Vacuum Tube
Tung-Sol
$44.24New Plate Current Tested Tung-Sol 7581A (KT66) Vacuum Tube The Tung-Sol 7581A is rated at a higher 35 watts compared to the standard 7581 or 6L6GC. This tube is a direct substitute for the KT66, and is in fact a version of the KT66. These Tung-Sols...NP085-1$44.24 -
New Matched Octet (8) Electro-Harmonix 6L6GC Vacuum Tubes
Electro-Harmonix
$292.12New Plate Current Matched Octet of Electro-Harmonix 6L6GC Vacuum Tubes Modeled after the vintage RCA 6L6GC black plate, the 6L6EH features large plate dimensions and improved grid structure for increased power handling capabilities. Also features mica...NP069-8$292.12 -
New Matched Quad (4) Electro-Harmonix 6L6GC Vacuum Tubes
Electro-Harmonix
$146.32New Plate Current Matched Quad of Electro-Harmonix 6L6GC Vacuum Tubes Modeled after the vintage RCA 6L6GC black plate, the 6L6EH features large plate dimensions and improved grid structure for increased power handling capabilities. Also features mica...NP069-4$146.32 -
New Matched Pair (2) Electro-Harmonix 6L6GC Vacuum Tubes
Electro-Harmonix
$74.45New Plate Current Matched Pair of Electro-Harmonix 6L6GC Vacuum Tubes Modeled after the vintage RCA 6L6GC black plate, the 6L6EH features large plate dimensions and improved grid structure for increased power handling capabilities. Also features mica...NP069-2$74.45 -
New Electro-Harmonix 6L6GC Vacuum Tube
Electro-Harmonix
$35.87New Plate Current Tested Electro-Harmonix 6L6GC Vacuum Tube Modeled after the vintage RCA 6L6GC black plate, the 6L6EH features large plate dimensions and improved grid structure for increased power handling capabilities. Also features mica spacers with...NP069-1$35.87 -
New Matched Quad (4) Tung-Sol 5881 Reissue Vacuum Tubes
Tung-Sol
$155.20New Plate Current Matched Quad of Tung-Sol 5881 (6L6GWB) Reissue Vacuum Tubes This is another new production tube done right by Tung-Sol. That classic 5881 sound was pioneered by Tung-Sol as one of the few brands that actually produced this specific tube...NP046-4$155.20 -
New Matched Pair (2) Tung-Sol 5881 Reissue Vacuum Tubes
Tung-Sol
$78.39New Plate Current Matched Pair of Tung-Sol 5881 (6L6WGB) Reissue Vacuum Tubes This is another new production tube done right by Tung-Sol. That classic 5881 sound was pioneered by Tung-Sol as one of the only brands that actually produced this specific...NP046-2$78.39 -
New Tung-Sol 5881 Reissue Vacuum Tube
Tung-Sol
$37.96New Gain Tested Tung-Sol 5881 (6L6WGB) Reissue Vacuum Tube This is another new production tube done right by Tung-Sol. That classic 5881 sound was pioneered by Tung-Sol as one of the only brands that actually produced this specific tube model. The...NP046-1$37.96 -
New Matched Octet (8) Genalex Gold Lion KT66 Reissue Vacuum Tubes
Genalex
$524.28New Current Matched Octet (8) of Reissue Genalex Gold Lion KT66 / 6L6 Vacuum Tubes These are so close to the originals we could hardly tell the difference in both appearance and sound. Of course these are made in Russia and not England like the...NP018-8$524.28 -
New Matched Sextet (6) Genalex Gold Lion KT66 Reissue Vacuum Tubes
Genalex
$395.94New Current Matched Sextet (6) of Reissue Genalex Gold Lion KT66 / 6L6 Vacuum Tubes These are so close to the originals we could hardly tell the difference in both appearance and sound. Of course these are made in Russia and not England like the...NP018-6$395.94 -
New JJ 6L6GC Vacuum Tube
JJ Electronic
$28.18New Gain Tested JJ Electronic (Tesla) 6L6GC Vacuum Tube The JJ 6L6GC is one of the most popular new production tubes of all time. There is a reason that many amplifier manufacturers use them. These are very reliable and have a sweet tone with...NP031-1$28.18 -
New Matched Pair (2) JJ 6L6GC Vacuum Tubes
JJ Electronic
$57.74New Plate Current Matched Pair of JJ Electronic (Tesla) 6L6GC Vacuum Tubes The JJ 6L6GC is one of the most popular new production tubes of all time. There is a reason that many amplifier manufacturers use them. These are very reliable and have...NP031-2$57.74 -
New Matched Quad (4) JJ 6L6GC Vacuum Tubes
JJ Electronic
$114.02New Plate Current Matched Quad of JJ Electronic (Tesla) 6L6GC Vacuum Tubes The JJ 6L6GC is one of the most popular new production tubes of all time. There is a reason that many amplifier manufacturers use them. These are very reliable and have...NP031-4$114.02 -
New Matched Sextet (6) JJ 6L6GC Vacuum Tubes
JJ Electronic
$172.51New Plate Current Matched Sextet of JJ Electronic (Tesla) 6L6GC Vacuum Tubes The JJ 6L6GC is one of the most popular new production tubes of all time. There is a reason that many amplifier manufacturers use them. These are very reliable and...NP031-6$172.51 -
New Matched Octet (8) JJ 6L6GC Vacuum Tubes
JJ Electronic
$227.57New Plate Current Matched Octet of JJ Electronic (Tesla) 6L6GC Vacuum Tubes The JJ 6L6GC is one of the most popular new production tubes of all time. There is a reason that many amplifier manufacturers use them. These are very reliable and have...NP031-8$227.57 -
New Matched Quad (4) Tung-Sol 6L6GC STR Reissue Vacuum Tubes
Tung-Sol
$159.70New Plate Current Matched Quad of Tung-Sol 6L6GC STR Reissue Vacuum Tubes The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as...NP029-4$159.70 -
New Matched Pair (2) Tung-Sol 6L6GC STR Reissue Vacuum Tubes
Tung-Sol
$81.13New Plate Current Matched Pair of Tung-Sol 6L6GC STR Reissue Vacuum Tubes The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as...NP029-2$81.13 -
New Tung-Sol 6L6GC STR Reissue Vacuum Tube
Tung-Sol
$39.43New Plate Current Tested Tung-Sol 6L6GC STR Reissue Vacuum Tube The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as the...NP029-1$39.43 -
New Matched Quad (4) Genalex Gold Lion KT66 Reissue Vacuum Tubes
Genalex
$264.68New Current Matched Quad (4) of Reissue Genalex Gold Lion KT66 / 6L6 Vacuum Tubes These are so close to the originals we could hardly tell the difference in both appearance and sound. Of course these are made in Russia and not England like the...NP018-4$264.68 -
New Matched Pair (2) Genalex Gold Lion KT66 Reissue Vacuum Tubes
Genalex
$132.60New Current Matched Pair of Reissue Genalex Gold Lion KT66 / 6L6 Vacuum Tubes These are so close to the originals we could hardly tell the difference in both appearance and sound. Of course these are made in Russia and not England like the originals...NP018-2$132.60 -
New Genalex Gold Lion KT66 Reissue Vacuum Tube
Genalex
$63.25New Reissue Genalex Gold Lion KT66 / 6L6 Vacuum Tube These are so close to the originals we could hardly tell the difference in both appearance and sound. Of course these are made in Russia and not England like the originals but that seems to be...NP018-1$63.25 -
New Sovtek 5881WXT Vacuum Tube
Sovtek
$40.25New Plate Current Tested Sovtek 5881WXT / 6L6WGC Vacuum Tube The Sovtek 5881WXT is one of the most popular 5881 vacuum tubes. The 6L6WGC is the same exact tube as the 5881 so if your amplifier calls for either, it will work. This tube was built to strict...NP009-1$40.25 -
New Matched Pair (2) Sovtek 5881WXT Vacuum Tubes
Sovtek
$82.88New Plate Current Matched Pair of Sovtek 5881WXT / 6L6WGC Vacuum Tubes The Sovtek 5881WXT is one of the most popular 5881 vacuum tubes. The 6L6WGC is the same exact tube as the 5881 so if your amplifier calls for either, it will work. This tube was...NP009-2$82.88 -
New Matched Quad (4) Sovtek 5881WXT Vacuum Tubes
Sovtek
$163.20New Plate Current Matched Quad of Sovtek 5881WXT / 6L6WGC Vacuum Tubes The Sovtek 5881WXT is one of the most popular 5881 vacuum tubes. The 6L6WGC is the same exact tube as the 5881 so if your amplifier calls for either, it will work. This tube was...NP009-4$163.20 -
On Sale
TESTS BAD FOR DISPLAY 1956 RCA USA 6L6 Metal Vacuum Tube
RCA
Now: $2.38Was: $4.75Tube Type / Number: 6L6 Actual Brand*: RCA Printed Brand: RCA Quantity of Tubes: Single Plate Construction: Metal Getter Construction: Metal Country of Manufacture: USA Visible Date Codes: K6 Lettering Condition: 10 Percent Year Made: 1956 Mica...TX1463Now: $2.38Was: $4.75