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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On Sale
New Matched Quad (4) Tung-Sol 7581A Vacuum Tubes
Tung-Sol
Now: $169.78Was: $188.64New 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...Now: $169.78Was: $188.64 -
On Sale
New Matched Pair (2) Tung-Sol 7581A Vacuum Tubes
Tung-Sol
Now: $86.60Was: $96.22New 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...Now: $86.60Was: $96.22 -
On Sale
New Tung-Sol 7581A Vacuum Tube
Tung-Sol
Now: $41.52Was: $46.13New 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...Now: $41.52Was: $46.13 -
On Sale
New Matched Pair (2) Electro-Harmonix 6L6GC Vacuum Tubes
Electro-Harmonix
Now: $50.33Was: $67.11New 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...Now: $50.33Was: $67.11 -
On Sale
New Electro-Harmonix 6L6GC Vacuum Tube
Electro-Harmonix
Now: $24.29Was: $32.38New 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...Now: $24.29Was: $32.38 -
On Sale
New Tung-Sol 5881 Reissue Vacuum Tube
Tung-Sol
Now: $30.83Was: $34.26New 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...Now: $30.83Was: $34.26 -
On Sale
New JJ 6L6GC Vacuum Tube
JJ Electronic
Now: $27.43Was: $30.48New 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...Now: $27.43Was: $30.48 -
On Sale
New Matched Pair (2) JJ 6L6GC Vacuum Tubes
JJ Electronic
Now: $56.11Was: $62.34New 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...Now: $56.11Was: $62.34 -
On Sale
New Matched Quad (4) JJ 6L6GC Vacuum Tubes
JJ Electronic
Now: $110.63Was: $122.92New 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...Now: $110.63Was: $122.92 -
On Sale
New Matched Sextet (6) JJ 6L6GC Vacuum Tubes
JJ Electronic
Now: $167.55Was: $186.17New 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...Now: $167.55Was: $186.17 -
On Sale
New Matched Octet (8) JJ 6L6GC Vacuum Tubes
JJ Electronic
Now: $220.73Was: $245.26New 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...Now: $220.73Was: $245.26 -
On Sale
New Tung-Sol 6L6GC STR Reissue Vacuum Tube
Tung-Sol
Now: $34.99Was: $41.17New 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...Now: $34.99Was: $41.17