Tube cross-reference
4GM6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 4GM6 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 4GM6
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
4EW6 Voltage Pentode - Sharp Cutoff (single)
- Base
- Not recorded
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 4.2 V
- Heater current
- 0.6 A
Replacement tubes for 4GM6
The following tubes are recorded as possible replacements for 4GM6. This direction does not establish that 4GM6 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 4EW6 as a possible replacement for4GM6.
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 | 7M | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 V |
| Heater current | 0.6 A | 0.6 A |
Where 4GM6 can be used as the replacement
In these recorded relationships, 4GM6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 4GM6.
Voltage Pentode - Sharp Cutoff (single)
The database records 4GM6 as a possible replacement for4EW6.
No special restrictions are recorded for this substitution.
| Specification | 4GM6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7M | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 4.2 V | 4.2 V |
| Heater current | 0.6 A | 0.6 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 4GM6 specifications →