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Tube Tinker — Electron Tube Database

Tube cross-reference

6L12 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6L12 voltage - dual triode (similar high frequency). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6L12

The following tubes are recorded as possible replacements for 6L12. This direction does not establish that 6L12 can replace them.

6AQ8

Voltage - Dual Triode (similar)

American To Foreign

The database records 6AQ8 as a possible replacement for6L12.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage - Dual Triode (similar high frequency)Voltage - Dual Triode (similar)
ConstructionTriode-TriodeTriode-Triode
BaseNot recordedB9A
SocketB9AB9A
Base pinsNot recorded9
Sections22
Heater voltage6.3 V6.3 V
Heater current0.435 A0.435 A

Where 6L12 can be used as the replacement

In these recorded relationships, 6L12 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6L12.

6AQ8

Voltage - Dual Triode (similar)

Foreign To American

The database records 6L12 as a possible replacement for6AQ8.

No special restrictions are recorded for this substitution.

Specification6L12 replacementOriginal tube
Tube typeVoltage - Dual Triode (similar high frequency)Voltage - Dual Triode (similar)
ConstructionTriode-TriodeTriode-Triode
BaseNot recordedB9A
SocketB9AB9A
Base pinsNot recorded9
Sections22
Heater voltage6.3 V6.3 V
Heater current0.435 A0.435 A

Verify before substituting

Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.

View the complete 6L12 specifications →