Tube cross-reference
8BA8A alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 8BA8A voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 8BA8A
The following tubes are recorded as possible replacements for 8BA8A. This direction does not establish that 8BA8A can replace them.
Voltage Triode Pentode
The database records 8AU8 as a possible replacement for8BA8A.
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 | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8AU8A as a possible replacement for8BA8A.
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 | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8AW8A as a possible replacement for8BA8A.
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 | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8BH8 as a possible replacement for8BA8A.
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 | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Where 8BA8A can be used as the replacement
In these recorded relationships, 8BA8A is the replacement tube. The listed original tubes are not automatically suitable as replacements for 8BA8A.
Voltage Triode Pentode
The database records 8BA8A as a possible replacement for8AU8.
No special restrictions are recorded for this substitution.
| Specification | 8BA8A replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8BA8A as a possible replacement for8AU8A.
No special restrictions are recorded for this substitution.
| Specification | 8BA8A replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8BA8A as a possible replacement for8AW8A.
No special restrictions are recorded for this substitution.
| Specification | 8BA8A replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Triode Pentode
The database records 8BA8A as a possible replacement for8BH8.
No special restrictions are recorded for this substitution.
| Specification | 8BA8A replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 8.4 V | 8.4 V |
| Heater current | 0.45 A | 0.45 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 8BA8A specifications →