Tube cross-reference
6AL9 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6AL9 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6AL9
The following tubes are recorded as possible replacements for 6AL9. This direction does not establish that 6AL9 can replace them.
Voltage Triode Pentode
The database records 6AG9 as a possible replacement for6AL9.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | E12 |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.82 A | 0.82 A |
Where 6AL9 can be used as the replacement
In these recorded relationships, 6AL9 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6AL9.
Voltage Triode Pentode
The database records 6AL9 as a possible replacement for6AG9.
No special restrictions are recorded for this substitution.
| Specification | 6AL9 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | E12 |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.82 A | 0.82 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 6AL9 specifications →