Tube cross-reference
ECC88 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the ECC88 voltage - dual triode (similar high frequency). Compare core specifications and verify every restriction before using a replacement.
Exact variations of ECC88
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.
6DJ8 Voltage - Dual Triode (similar high frequency)
- Base
- 9AJ
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.365 A
Replacement tubes for ECC88
The following tubes are recorded as possible replacements for ECC88. This direction does not establish that ECC88 can replace them.
Voltage - Dual Triode (similar high frequency)
The database records 6DJ8 as a possible replacement forECC88.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar high frequency) | Voltage - Dual Triode (similar high frequency) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 9AJ | 9AJ |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.365 A | 0.365 A |
Where ECC88 can be used as the replacement
In these recorded relationships, ECC88 is the replacement tube. The listed original tubes are not automatically suitable as replacements for ECC88.
Voltage - Dual Triode (similar high frequency)
The database records ECC88 as a possible replacement for6DJ8.
No special restrictions are recorded for this substitution.
| Specification | ECC88 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar high frequency) | Voltage - Dual Triode (similar high frequency) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 9AJ | 9AJ |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.365 A | 0.365 A |
Voltage - Dual Triode (similar high frequency)
The database records ECC88 as a possible replacement for6ES8.
No special restrictions are recorded for this substitution.
| Specification | ECC88 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar high frequency) | Voltage - Dual Triode (similar high frequency) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 9AJ | 9AJ |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.365 A | 0.365 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 ECC88 specifications →