Tube cross-reference
6SN7GTB alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6SN7GTB voltage - dual triode (similar). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6SN7GTB
The following tubes are recorded as possible replacements for 6SN7GTB. This direction does not establish that 6SN7GTB can replace them.
Voltage - Dual Triode (similar)
The database records 6SN7GTA as a possible replacement for6SN7GTB.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | RETMA 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Where 6SN7GTB can be used as the replacement
In these recorded relationships, 6SN7GTB is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6SN7GTB.
Voltage - Dual Triode (similar)
The database records 6SN7GTB as a possible replacement for6SN7GT.
No special restrictions are recorded for this substitution.
| Specification | 6SN7GTB replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | RETMA 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Voltage - Dual Triode (similar)
The database records 6SN7GTB as a possible replacement for6SN7GTA.
No special restrictions are recorded for this substitution.
| Specification | 6SN7GTB replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | RETMA 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 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 6SN7GTB specifications →