Tube cross-reference
6K11 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6K11 voltage - triple triode. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6K11
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.
6Q11 Voltage - Triple Triode
- Base
- 12BY
- Socket
- B12C
- Base pins
- 12
- Sections
- 3
- Heater voltage
- 6.3 V
- Heater current
- 0.6 A
Replacement tubes for 6K11
The following tubes are recorded as possible replacements for 6K11. This direction does not establish that 6K11 can replace them.
Voltage - Triple Triode
The database records 6Q11 as a possible replacement for6K11.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triple Triode | Voltage - Triple Triode |
| Construction | Triode-Triode-Triode | Triode-Triode-Triode |
| Base | E12-70 | 12BY |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Where 6K11 can be used as the replacement
In these recorded relationships, 6K11 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6K11.
Voltage - Triple Triode
The database records 6K11 as a possible replacement for6AV11.
- Not suitable for all circuits
| Specification | 6K11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triple Triode | Voltage - Triple Triode |
| Construction | Triode-Triode-Triode | Triode-Triode-Triode |
| Base | E12-70 | 12BY |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Voltage - Triple Triode
The database records 6K11 as a possible replacement for6BK11.
- Not suitable for all circuits
| Specification | 6K11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triple Triode | Voltage - Triple Triode |
| Construction | Triode-Triode-Triode | Triode-Triode-Triode |
| Base | E12-70 | Not recorded |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Voltage - Triple Triode
The database records 6K11 as a possible replacement for6C10.
- Not suitable for all circuits
| Specification | 6K11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triple Triode | Voltage - Triple Triode |
| Construction | Triode-Triode-Triode | Triode-Triode-Triode |
| Base | E12-70 | Not recorded |
| Socket | B12C | Not recorded |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.55 A |
Voltage - Triple Triode
The database records 6K11 as a possible replacement for6D10.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6K11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triple Triode | Voltage - Triple Triode |
| Construction | Triode-Triode-Triode | Triode-Triode-Triode |
| Base | E12-70 | 12BQ |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 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 6K11 specifications →