Tube cross-reference
6JK6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6JK6 voltage pentode - sharp cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6JK6
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.
6JL6 Voltage Pentode - Remote Cutoff (single)
- Base
- Not recorded
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.35 A
Replacement tubes for 6JK6
The following tubes are recorded as possible replacements for 6JK6. This direction does not establish that 6JK6 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 6EW6 as a possible replacement for6JK6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7CM |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.35 A | 0.4 A |
Voltage Pentode - Remote Cutoff (single)
The database records 6JL6 as a possible replacement for6JK6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | B7G | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.35 A | 0.35 A |
Where 6JK6 can be used as the replacement
In these recorded relationships, 6JK6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6JK6.
Voltage Pentode - Remote Cutoff (single)
The database records 6JK6 as a possible replacement for6JL6.
No special restrictions are recorded for this substitution.
| Specification | 6JK6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | B7G | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.35 A | 0.35 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 6JK6 specifications →