Tube cross-reference
6JX8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6JX8 voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6JX8
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.
ECH84 Voltage - Triode (with diode, heptode or hexode)
- Base
- B9A
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.3 A
Replacement tubes for 6JX8
The following tubes are recorded as possible replacements for 6JX8. This direction does not establish that 6JX8 can replace them.
Voltage - Triode (with diode, heptode or hexode)
The database records ECH84 as a possible replacement for6JX8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Heptode-Triode | Hexode-Triode |
| Base | Not recorded | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where 6JX8 can be used as the replacement
In these recorded relationships, 6JX8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6JX8.
Voltage - Triode (with diode, heptode or hexode)
The database records 6JX8 as a possible replacement forECH84.
No special restrictions are recorded for this substitution.
| Specification | 6JX8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Heptode-Triode | Hexode-Triode |
| Base | Not recorded | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 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 6JX8 specifications →