Tube cross-reference
6HL8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6HL8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6HL8
The following tubes are recorded as possible replacements for 6HL8. This direction does not establish that 6HL8 can replace them.
Voltage Triode Pentode
The database records ECF80 as a possible replacement for6HL8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9C12 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.43 A |
Voltage Radio Detector Converter
The database records 6BL8 as a possible replacement for6HL8.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9DC |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.45 A |
Voltage Triode Pentode
The database records 6GH8 as a possible replacement for6HL8.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.45 A |
Voltage Triode Pentode
The database records 6GH8A as a possible replacement for6HL8.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.45 A |
Where 6HL8 can be used as the replacement
In these recorded relationships, 6HL8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6HL8.
Voltage Triode Pentode
The database records 6HL8 as a possible replacement for6GH8.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | 6HL8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.45 A |
Voltage Triode Pentode
The database records 6HL8 as a possible replacement for6GH8A.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | 6HL8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| 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 6HL8 specifications →