Tube cross-reference
4BA6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 4BA6 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 4BA6
The following tubes are recorded as possible replacements for 4BA6. This direction does not establish that 4BA6 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 4AU6 as a possible replacement for4BA6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7CC | 7BK |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Pentode - Remote Cutoff (single)
The database records 4BZ6 as a possible replacement for4BA6.
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7CC | 7CM |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 V |
| Heater current | 0.45 A | 0.45 A |
Where 4BA6 can be used as the replacement
In these recorded relationships, 4BA6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 4BA6.
Voltage Pentode - Sharp Cutoff (single)
The database records 4BA6 as a possible replacement for4AU6.
No special restrictions are recorded for this substitution.
| Specification | 4BA6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7CC | 7BK |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Pentode - Remote Cutoff (single)
The database records 4BA6 as a possible replacement for4BZ6.
- Not suitable for all circuits
| Specification | 4BA6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7CC | 7CM |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 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 4BA6 specifications →